Reland "Add stub gpu workaround generators"

This is a reland of 94d25b970b97c68ddd0b4ceb71f2233aac05e6b5

Original change's description:
> Add stub gpu workaround generators
> 
> Like https://chromium-review.googlesource.com/c/chromium/src/+/1005362,
> this patch adds a way for Chrome and Skia to share a set of driver
> workaround names so that they can be turned on by Chrome (or Skia) as
> needed.
> 
> To avoid weird cross-repository dependencies, the generator script is
> duplicated in Skia.
> 
> This patch just adds a few dummy workaround names to make sure the build
> process is working.  The followup to this is to add workaround init
> to GrContext/GrContextOptions and to start implementing individual
> workarounds.
> 
> Implementing these workarounds is to support Chrome's "out of process
> raster" which will use Ganesh without a command buffer, and so will not
> have the workarounds that the command buffer provides.
> 
> Bug: chromium:829614
> Change-Id: I40745a777a95805995991fedb81657ae418b52d9
> Reviewed-on: https://skia-review.googlesource.com/120608
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Adrienne Walker <enne@chromium.org>

Bug: chromium:829614
Change-Id: Idb3309ffa894f7585ee493388b56565e9d4a3101
Reviewed-on: https://skia-review.googlesource.com/122800
Auto-Submit: Adrienne Walker <enne@chromium.org>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/gpu/GrDriverBugWorkarounds.cpp b/src/gpu/GrDriverBugWorkarounds.cpp
new file mode 100644
index 0000000000..5ed9d8d2ef
--- /dev/null
+++ b/src/gpu/GrDriverBugWorkarounds.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrDriverBugWorkarounds.h"
+
+#include "SkTypes.h"
+
+GrDriverBugWorkarounds::GrDriverBugWorkarounds() = default;
+
+GrDriverBugWorkarounds::GrDriverBugWorkarounds(
+        const std::vector<int>& enabled_driver_bug_workarounds) {
+    for (auto id : enabled_driver_bug_workarounds) {
+        switch (id) {
+#define GPU_OP(type, name)                        \
+            case GrDriverBugWorkaroundType::type: \
+                name = true;                      \
+                break;
+
+            GPU_DRIVER_BUG_WORKAROUNDS(GPU_OP)
+#undef GPU_OP
+            default:
+                SK_ABORT("Not implemented");
+                break;
+        }
+    }
+}
+
+GrDriverBugWorkarounds::~GrDriverBugWorkarounds() = default;