Add Flutter compile bot

BUG=skia:6227

Change-Id: I997663e49c407e3ec64c8e67a2ca27700d5081b4
Reviewed-on: https://skia-review.googlesource.com/8448
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Eric Boren <borenet@google.com>

9 files changed, 510 insertions, 0 deletions

diff --git a/infra/bots/jobs.json b/infra/bots/jobs.json
index 4a6c81cc62..f8b2521d20 100644
--- a/infra/bots/jobs.json
+++ b/infra/bots/jobs.json
@@ -42,6 +42,7 @@
   "Build-Ubuntu-GCC-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE",
   "Build-Ubuntu-GCC-x86_64-Release",
   "Build-Ubuntu-GCC-x86_64-Release-ANGLE",
+  "Build-Ubuntu-GCC-x86_64-Release-Flutter_Android",
   "Build-Ubuntu-GCC-x86_64-Release-Mesa",
   "Build-Ubuntu-GCC-x86_64-Release-NoGPU",
   "Build-Ubuntu-GCC-x86_64-Release-PDFium",
diff --git a/infra/bots/recipe_modules/compile/example.expected/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android.json b/infra/bots/recipe_modules/compile/example.expected/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android.json
new file mode 100644
index 0000000000..3b3ada8c41
--- /dev/null
+++ b/infra/bots/recipe_modules/compile/example.expected/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android.json
@@ -0,0 +1,176 @@
+[
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
+      "[CUSTOM_/_B_WORK]/flutter",
+      "511"
+    ],
+    "name": "makedirs checkout_path",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
+      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
+      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
+      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
+      "--spec",
+      "cache_dir = '[CUSTOM_/_B_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'src/flutter', 'url': 'https://github.com/flutter/engine.git'}]\ntarget_os = ['android']",
+      "--patch_root",
+      "src/third_party/skia",
+      "--revision_mapping_file",
+      "{\"src/flutter\": \"got_flutter_revision\", \"src/third_party/skia\": \"got_revision\"}",
+      "--git-cache-dir",
+      "[CUSTOM_/_B_CACHE]",
+      "--output_json",
+      "/path/to/tmp/json",
+      "--revision",
+      "src/flutter@origin/master",
+      "--revision",
+      "src/third_party/skia@abc123",
+      "--output_manifest"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "bot_update",
+    "~followup_annotations": [
+      "@@@STEP_TEXT@Some step text@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"did_run\": true, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"fixed_revisions\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": \"origin/master\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/third_party/skia\": \"abc123\"@@@",
+      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"9221bca00ddbd888260084def81f09543281b952\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    }, @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/third_party/skia\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/third_party/skia.git\", @@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"d9c4a4d173a97ef2832b65636b4200bb93ea8ee1\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    }@@@",
+      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/third_party/skia\", @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_flutter_revision\": \"9221bca00ddbd888260084def81f09543281b952\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_flutter_revision_cp\": \"refs/heads/master@{#84512}\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_revision\": \"d9c4a4d173a97ef2832b65636b4200bb93ea8ee1\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_revision_cp\": \"refs/heads/master@{#143121}\"@@@",
+      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@",
+      "@@@SET_BUILD_PROPERTY@got_revision@\"d9c4a4d173a97ef2832b65636b4200bb93ea8ee1\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_revision_cp@\"refs/heads/master@{#143121}\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_flutter_revision_cp@\"refs/heads/master@{#84512}\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_flutter_revision@\"9221bca00ddbd888260084def81f09543281b952\"@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "gclient",
+      "runhooks"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter/src",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "runhook"
+  },
+  {
+    "cmd": [
+      "flutter/tools/gn",
+      "--runtime-mode=release",
+      "--android"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter/src",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "gn_gen"
+  },
+  {
+    "cmd": [
+      "ninja",
+      "-C",
+      "out/android_release",
+      "-j100"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter/src",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "build_flutter"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "import errno\nimport glob\nimport os\nimport shutil\nimport sys\n\nsrc = sys.argv[1]\ndst = sys.argv[2]\nbuild_products_whitelist = ['dm', 'dm.exe', 'get_images_from_skps', 'get_images_from_skps.exe', 'nanobench', 'nanobench.exe', 'skpbench', '*.so', '*.dll', '*.dylib', 'skia_launcher', 'lib/*.so', 'iOSShell.app', 'iOSShell.ipa', 'visualbench', 'visualbench.exe', 'vulkan-1.dll']\n\ntry:\n  os.makedirs(dst)\nexcept OSError as e:\n  if e.errno != errno.EEXIST:\n    raise\n\nfor pattern in build_products_whitelist:\n  path = os.path.join(src, pattern)\n  for f in glob.glob(path):\n    dst_path = os.path.join(dst, os.path.relpath(f, src))\n    if not os.path.isdir(os.path.dirname(dst_path)):\n      os.makedirs(os.path.dirname(dst_path))\n    print 'Copying build product %s to %s' % (f, dst_path)\n    shutil.move(f, dst_path)\n",
+      "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android/Release",
+      "[CUSTOM_[SWARM_OUT_DIR]]/out/Release"
+    ],
+    "name": "copy build products",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@import errno@@@",
+      "@@@STEP_LOG_LINE@python.inline@import glob@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import shutil@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@src = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@dst = sys.argv[2]@@@",
+      "@@@STEP_LOG_LINE@python.inline@build_products_whitelist = ['dm', 'dm.exe', 'get_images_from_skps', 'get_images_from_skps.exe', 'nanobench', 'nanobench.exe', 'skpbench', '*.so', '*.dll', '*.dylib', 'skia_launcher', 'lib/*.so', 'iOSShell.app', 'iOSShell.ipa', 'visualbench', 'visualbench.exe', 'vulkan-1.dll']@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@try:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(dst)@@@",
+      "@@@STEP_LOG_LINE@python.inline@except OSError as e:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  if e.errno != errno.EEXIST:@@@",
+      "@@@STEP_LOG_LINE@python.inline@    raise@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@for pattern in build_products_whitelist:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  path = os.path.join(src, pattern)@@@",
+      "@@@STEP_LOG_LINE@python.inline@  for f in glob.glob(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@    dst_path = os.path.join(dst, os.path.relpath(f, src))@@@",
+      "@@@STEP_LOG_LINE@python.inline@    if not os.path.isdir(os.path.dirname(dst_path)):@@@",
+      "@@@STEP_LOG_LINE@python.inline@      os.makedirs(os.path.dirname(dst_path))@@@",
+      "@@@STEP_LOG_LINE@python.inline@    print 'Copying build product %s to %s' % (f, dst_path)@@@",
+      "@@@STEP_LOG_LINE@python.inline@    shutil.move(f, dst_path)@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "name": "$result",
+    "recipe_result": null,
+    "status_code": 0
+  }
+]
\ No newline at end of file
diff --git a/infra/bots/recipe_modules/compile/example.expected/flutter_trybot.json b/infra/bots/recipe_modules/compile/example.expected/flutter_trybot.json
new file mode 100644
index 0000000000..f753c569e3
--- /dev/null
+++ b/infra/bots/recipe_modules/compile/example.expected/flutter_trybot.json
@@ -0,0 +1,180 @@
+[
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
+      "[CUSTOM_/_B_WORK]/flutter",
+      "511"
+    ],
+    "name": "makedirs checkout_path",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
+      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
+      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
+      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
+      "--spec",
+      "cache_dir = '[CUSTOM_/_B_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'src/flutter', 'url': 'https://github.com/flutter/engine.git'}]\ntarget_os = ['android']",
+      "--patch_root",
+      "src/third_party/skia",
+      "--revision_mapping_file",
+      "{\"src/flutter\": \"got_flutter_revision\", \"src/third_party/skia\": \"got_revision\"}",
+      "--git-cache-dir",
+      "[CUSTOM_/_B_CACHE]",
+      "--gerrit_repo",
+      "https://skia.googlesource.com/skia.git",
+      "--gerrit_ref",
+      "refs/changes/89/456789/12",
+      "--output_json",
+      "/path/to/tmp/json",
+      "--revision",
+      "src/flutter@origin/master",
+      "--revision",
+      "src/third_party/skia@abc123",
+      "--output_manifest"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "bot_update",
+    "~followup_annotations": [
+      "@@@STEP_TEXT@Some step text@@@",
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"did_run\": true, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"fixed_revisions\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": \"origin/master\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/third_party/skia\": \"abc123\"@@@",
+      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"manifest\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/flutter\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/flutter.git\", @@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"9221bca00ddbd888260084def81f09543281b952\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    }, @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"src/third_party/skia\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@      \"repository\": \"https://fake.org/src/third_party/skia.git\", @@@",
+      "@@@STEP_LOG_LINE@json.output@      \"revision\": \"d9c4a4d173a97ef2832b65636b4200bb93ea8ee1\"@@@",
+      "@@@STEP_LOG_LINE@json.output@    }@@@",
+      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"patch_failure\": false, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"patch_root\": \"src/third_party/skia\", @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"properties\": {@@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_flutter_revision\": \"9221bca00ddbd888260084def81f09543281b952\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_flutter_revision_cp\": \"refs/heads/master@{#84512}\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_revision\": \"d9c4a4d173a97ef2832b65636b4200bb93ea8ee1\", @@@",
+      "@@@STEP_LOG_LINE@json.output@    \"got_revision_cp\": \"refs/heads/master@{#143121}\"@@@",
+      "@@@STEP_LOG_LINE@json.output@  }, @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"root\": \"src/flutter\", @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"step_text\": \"Some step text\"@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@",
+      "@@@SET_BUILD_PROPERTY@got_revision@\"d9c4a4d173a97ef2832b65636b4200bb93ea8ee1\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_revision_cp@\"refs/heads/master@{#143121}\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_flutter_revision_cp@\"refs/heads/master@{#84512}\"@@@",
+      "@@@SET_BUILD_PROPERTY@got_flutter_revision@\"9221bca00ddbd888260084def81f09543281b952\"@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "gclient",
+      "runhooks"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter/src",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "runhook"
+  },
+  {
+    "cmd": [
+      "flutter/tools/gn",
+      "--runtime-mode=release",
+      "--android"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter/src",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "gn_gen"
+  },
+  {
+    "cmd": [
+      "ninja",
+      "-C",
+      "out/android_release",
+      "-j100"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/flutter/src",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+    },
+    "name": "build_flutter"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "import errno\nimport glob\nimport os\nimport shutil\nimport sys\n\nsrc = sys.argv[1]\ndst = sys.argv[2]\nbuild_products_whitelist = ['dm', 'dm.exe', 'get_images_from_skps', 'get_images_from_skps.exe', 'nanobench', 'nanobench.exe', 'skpbench', '*.so', '*.dll', '*.dylib', 'skia_launcher', 'lib/*.so', 'iOSShell.app', 'iOSShell.ipa', 'visualbench', 'visualbench.exe', 'vulkan-1.dll']\n\ntry:\n  os.makedirs(dst)\nexcept OSError as e:\n  if e.errno != errno.EEXIST:\n    raise\n\nfor pattern in build_products_whitelist:\n  path = os.path.join(src, pattern)\n  for f in glob.glob(path):\n    dst_path = os.path.join(dst, os.path.relpath(f, src))\n    if not os.path.isdir(os.path.dirname(dst_path)):\n      os.makedirs(os.path.dirname(dst_path))\n    print 'Copying build product %s to %s' % (f, dst_path)\n    shutil.move(f, dst_path)\n",
+      "[CUSTOM_/_B_WORK]/flutter/src/third_party/skia/out/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android/Release",
+      "[CUSTOM_[SWARM_OUT_DIR]]/out/Release"
+    ],
+    "name": "copy build products",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@import errno@@@",
+      "@@@STEP_LOG_LINE@python.inline@import glob@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import shutil@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@src = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@dst = sys.argv[2]@@@",
+      "@@@STEP_LOG_LINE@python.inline@build_products_whitelist = ['dm', 'dm.exe', 'get_images_from_skps', 'get_images_from_skps.exe', 'nanobench', 'nanobench.exe', 'skpbench', '*.so', '*.dll', '*.dylib', 'skia_launcher', 'lib/*.so', 'iOSShell.app', 'iOSShell.ipa', 'visualbench', 'visualbench.exe', 'vulkan-1.dll']@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@try:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(dst)@@@",
+      "@@@STEP_LOG_LINE@python.inline@except OSError as e:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  if e.errno != errno.EEXIST:@@@",
+      "@@@STEP_LOG_LINE@python.inline@    raise@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@for pattern in build_products_whitelist:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  path = os.path.join(src, pattern)@@@",
+      "@@@STEP_LOG_LINE@python.inline@  for f in glob.glob(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@    dst_path = os.path.join(dst, os.path.relpath(f, src))@@@",
+      "@@@STEP_LOG_LINE@python.inline@    if not os.path.isdir(os.path.dirname(dst_path)):@@@",
+      "@@@STEP_LOG_LINE@python.inline@      os.makedirs(os.path.dirname(dst_path))@@@",
+      "@@@STEP_LOG_LINE@python.inline@    print 'Copying build product %s to %s' % (f, dst_path)@@@",
+      "@@@STEP_LOG_LINE@python.inline@    shutil.move(f, dst_path)@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "name": "$result",
+    "recipe_result": null,
+    "status_code": 0
+  }
+]
\ No newline at end of file
diff --git a/infra/bots/recipe_modules/compile/example.py b/infra/bots/recipe_modules/compile/example.py
index 8cd5d49d85..988184e508 100644
--- a/infra/bots/recipe_modules/compile/example.py
+++ b/infra/bots/recipe_modules/compile/example.py
@@ -36,6 +36,7 @@ TEST_BUILDERS = {
       'Build-Ubuntu-GCC-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE',
       'Build-Ubuntu-GCC-x86_64-Release-ANGLE',
       'Build-Ubuntu-GCC-x86_64-Release-Fast',
+      'Build-Ubuntu-GCC-x86_64-Release-Flutter_Android',
       'Build-Ubuntu-GCC-x86_64-Release-Mesa',
       'Build-Ubuntu-GCC-x86_64-Release-PDFium',
       'Build-Ubuntu-GCC-x86_64-Release-PDFium_SkiaPaths',
@@ -213,3 +214,29 @@ def GenTests(api):
           api.path['start_dir'].join('tmp', 'uninteresting_hashes.txt')
       )
   )
+
+  buildername = 'Build-Ubuntu-GCC-x86_64-Release-Flutter_Android'
+  yield (
+      api.test('flutter_trybot') +
+      api.properties(
+          repository='https://skia.googlesource.com/skia.git',
+          buildername=buildername,
+          mastername=mastername,
+          slavename=slavename,
+          buildnumber=5,
+          path_config='kitchen',
+          swarm_out_dir='[SWARM_OUT_DIR]',
+          revision='abc123',
+          nobuildbot='True',
+          patch_issue=500,
+          patch_set=1,
+          patch_storage='gerrit') +
+      api.properties.tryserver(
+          buildername=buildername,
+          gerrit_project='skia',
+          gerrit_url='https://skia-review.googlesource.com/',
+      ) +
+      api.path.exists(
+          api.path['start_dir'].join('tmp', 'uninteresting_hashes.txt')
+      )
+  )
diff --git a/infra/bots/recipe_modules/core/api.py b/infra/bots/recipe_modules/core/api.py
index bab0fef0e5..eb6dc9404f 100644
--- a/infra/bots/recipe_modules/core/api.py
+++ b/infra/bots/recipe_modules/core/api.py
@@ -80,9 +80,15 @@ class SkiaApi(recipe_api.RecipeApi):
     main_repo = self.m.properties['repository']
     if self.m.vars.need_pdfium_checkout:
       main_repo = 'https://pdfium.googlesource.com/pdfium.git'
+    if self.m.vars.need_flutter_checkout:
+      main_repo = 'https://github.com/flutter/engine.git'
     main_name = self.m.path.basename(main_repo)
     if main_name.endswith('.git'):
       main_name = main_name[:-len('.git')]
+      # Special case for flutter because it seems to need a very specific
+      # directory structure to successfully build.
+      if self.m.vars.need_flutter_checkout and main_name == 'engine':
+        main_name = 'src/flutter'
     main = gclient_cfg.solutions.add()
     main.name = main_name
     main.managed = False
@@ -105,6 +111,21 @@ class SkiaApi(recipe_api.RecipeApi):
       m[skia_dep_path] = 'got_revision'
       patch_root = skia_dep_path
 
+    if self.m.vars.need_flutter_checkout:
+      # Skia is a DEP of Flutter; the 'revision' property is a Skia revision,
+      # and any patch should be applied to Skia, not Flutter.
+      main.revision = 'origin/master'
+      main.managed = True
+      m[main_name] = 'got_flutter_revision'
+      if 'Android' in self.m.vars.builder_cfg.get('extra_config', ''):
+        gclient_cfg.target_os.add('android')
+
+      skia_dep_path = 'src/third_party/skia'
+      gclient_cfg.patch_projects['skia'] = (skia_dep_path, 'HEAD')
+      gclient_cfg.revisions[skia_dep_path] = self.m.properties['revision']
+      m[skia_dep_path] = 'got_revision'
+      patch_root = skia_dep_path
+
     self.update_repo(self.m.vars.checkout_root, main)
 
     # TODO(rmistry): Remove the below block after there is a solution for
diff --git a/infra/bots/recipe_modules/flavor/api.py b/infra/bots/recipe_modules/flavor/api.py
index 263166a3aa..c90136fac1 100644
--- a/infra/bots/recipe_modules/flavor/api.py
+++ b/infra/bots/recipe_modules/flavor/api.py
@@ -9,6 +9,7 @@
 from recipe_engine import recipe_api
 
 from . import default_flavor
+from . import flutter_flavor
 from . import gn_android_flavor
 from . import gn_flavor
 from . import ios_flavor
@@ -29,6 +30,9 @@ VERSION_NONE = -1
 def is_android(builder_cfg):
   return 'Android' in builder_cfg.get('extra_config', '')
 
+def is_flutter(builder_cfg):
+  return 'Flutter' in builder_cfg.get('extra_config', '')
+
 def is_ios(builder_cfg):
   return 'iOS' == builder_cfg.get('os', '')
 
@@ -42,6 +46,8 @@ def is_valgrind(builder_cfg):
 class SkiaFlavorApi(recipe_api.RecipeApi):
   def get_flavor(self, builder_cfg):
     """Return a flavor utils object specific to the given builder."""
+    if is_flutter(builder_cfg):
+      return flutter_flavor.FlutterFlavorUtils(self.m)
     if is_android(builder_cfg):
       return gn_android_flavor.GNAndroidFlavorUtils(self.m)
     elif is_ios(builder_cfg):
diff --git a/infra/bots/recipe_modules/flavor/flutter_flavor.py b/infra/bots/recipe_modules/flavor/flutter_flavor.py
new file mode 100644
index 0000000000..d87fcdba06
--- /dev/null
+++ b/infra/bots/recipe_modules/flavor/flutter_flavor.py
@@ -0,0 +1,53 @@
+# Copyright 2017 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import re
+
+import default_flavor
+
+
+"""Flutter flavor utils, used for building Flutter with Skia."""
+
+
+class FlutterFlavorUtils(default_flavor.DefaultFlavorUtils):
+
+  def compile(self, target, **kwargs):
+    """Build Flutter with Skia."""
+
+    flutter_dir = self.m.vars.checkout_root.join('src')
+    configuration = self.m.vars.builder_cfg.get('configuration').lower()
+    extra_config = self.m.vars.builder_cfg.get('extra_config', '')
+    out_dir = configuration
+
+    # Runhook to generate the gn binary in buildtools.
+    self.m.run(
+        self.m.step,
+        'runhook',
+        cmd=['gclient', 'runhooks'],
+        cwd=flutter_dir,
+        **kwargs)
+
+    # Setup GN args.
+    gn_args = [
+        '--runtime-mode=%s' % configuration,
+    ]
+    if 'Android' in extra_config:
+      gn_args.append('--android')
+      out_dir = 'android_' + out_dir
+
+    # Run GN.
+    self.m.run(
+        self.m.step,
+        'gn_gen',
+        cmd=['flutter/tools/gn'] + gn_args,
+        cwd=flutter_dir,
+        **kwargs)
+
+    # Build Flutter.
+    self.m.run(
+        self.m.step,
+        'build_flutter',
+        cmd=['ninja', '-C', 'out/' + out_dir, '-j100'],
+        cwd=flutter_dir,
+        **kwargs)
diff --git a/infra/bots/recipe_modules/vars/api.py b/infra/bots/recipe_modules/vars/api.py
index faba0ad5c0..2e2923b986 100644
--- a/infra/bots/recipe_modules/vars/api.py
+++ b/infra/bots/recipe_modules/vars/api.py
@@ -73,9 +73,17 @@ class SkiaVarsApi(recipe_api.RecipeApi):
     # checkout of Skia obtained through DEPS in pdfium/third_party/skia.
     self.need_pdfium_checkout = 'PDFium' in self.builder_name
 
+    # Some bots also require a checkout of Flutter; in this case we use the
+    # checkout of Skia obtained through DEPS in src/third_party/skia.
+    self.need_flutter_checkout = 'Flutter' in self.builder_name
+
     self.skia_dir = self.checkout_root.join('skia')
     if self.need_pdfium_checkout:
       self.skia_dir = self.checkout_root.join('pdfium', 'third_party', 'skia')
+    elif self.need_flutter_checkout:
+      self.checkout_root = self.checkout_root.join('flutter')
+      self.skia_dir = self.checkout_root.join('src', 'third_party', 'skia')
+
     if not self.persistent_checkout:
       self.m.path['checkout'] = self.skia_dir
 
diff --git a/infra/bots/tasks.json b/infra/bots/tasks.json
index 48f7cc5a3b..6873e873d0 100644
--- a/infra/bots/tasks.json
+++ b/infra/bots/tasks.json
@@ -258,6 +258,12 @@
         "Build-Ubuntu-GCC-x86_64-Release-ANGLE"
       ]
     },
+    "Build-Ubuntu-GCC-x86_64-Release-Flutter_Android": {
+      "priority": 0.8,
+      "tasks": [
+        "Build-Ubuntu-GCC-x86_64-Release-Flutter_Android"
+      ]
+    },
     "Build-Ubuntu-GCC-x86_64-Release-Mesa": {
       "priority": 0.8,
       "tasks": [
@@ -2876,6 +2882,38 @@
       "isolate": "compile_skia.isolate",
       "priority": 0.8
     },
+    "Build-Ubuntu-GCC-x86_64-Release-Flutter_Android": {
+      "cipd_packages": [
+        {
+          "name": "skia/bots/android_ndk_linux",
+          "path": "android_ndk_linux",
+          "version": "version:5"
+        }
+      ],
+      "dimensions": [
+        "gpu:none",
+        "os:Ubuntu-14.04",
+        "pool:Skia"
+      ],
+      "extra_args": [
+        "--workdir",
+        "../../..",
+        "swarm_compile",
+        "repository=<(REPO)",
+        "buildername=Build-Ubuntu-GCC-x86_64-Release-Flutter_Android",
+        "mastername=fake-master",
+        "buildnumber=2",
+        "slavename=fake-buildslave",
+        "nobuildbot=True",
+        "swarm_out_dir=${ISOLATED_OUTDIR}",
+        "revision=<(REVISION)",
+        "patch_storage=<(PATCH_STORAGE)",
+        "patch_issue=<(ISSUE)",
+        "patch_set=<(PATCHSET)"
+      ],
+      "isolate": "compile_skia.isolate",
+      "priority": 0.8
+    },
     "Build-Ubuntu-GCC-x86_64-Release-Mesa": {
       "dimensions": [
         "gpu:none",