move imagefilters into separate dir and flag for build.gn

Requires https://chromium-review.googlesource.com/c/chromium/src/+/1105062

Bug: skia:
Change-Id: I948056234efa57c0f727a61d5fb3258034de5199
Reviewed-on: https://skia-review.googlesource.com/135566
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Reed <reed@google.com>

3 files changed, 45 insertions, 34 deletions

diff --git a/gn/effects.gni b/gn/effects.gni
index 93dbf7ea1c..299d5e986d 100644
--- a/gn/effects.gni
+++ b/gn/effects.gni
@@ -12,43 +12,26 @@ skia_effects_sources = [
 
   "$_src/effects/Sk1DPathEffect.cpp",
   "$_src/effects/Sk2DPathEffect.cpp",
-  "$_src/effects/SkAlphaThresholdFilter.cpp",
-  "$_src/effects/SkArithmeticImageFilter.cpp",
-  "$_src/effects/SkColorFilterImageFilter.cpp",
   "$_src/effects/SkColorMatrix.cpp",
   "$_src/effects/SkColorMatrixFilter.cpp",
-  "$_src/effects/SkComposeImageFilter.cpp",
   "$_src/effects/SkCornerPathEffect.cpp",
   "$_src/effects/SkDashPathEffect.cpp",
   "$_src/effects/SkDiscretePathEffect.cpp",
-  "$_src/effects/SkDisplacementMapEffect.cpp",
-  "$_src/effects/SkDropShadowImageFilter.cpp",
   "$_src/effects/SkEmbossMask.cpp",
   "$_src/effects/SkEmbossMask.h",
   "$_src/effects/SkEmbossMaskFilter.cpp",
-  "$_src/effects/SkImageSource.cpp",
   "$_src/effects/SkHighContrastFilter.cpp",
   "$_src/effects/SkLayerDrawLooper.cpp",
-  "$_src/effects/SkLightingImageFilter.cpp",
   "$_src/effects/SkLumaColorFilter.cpp",
-  "$_src/effects/SkMagnifierImageFilter.cpp",
-  "$_src/effects/SkMatrixConvolutionImageFilter.cpp",
-  "$_src/effects/SkMergeImageFilter.cpp",
-  "$_src/effects/SkMorphologyImageFilter.cpp",
-  "$_src/effects/SkOffsetImageFilter.cpp",
   "$_src/effects/SkOverdrawColorFilter.cpp",
   "$_src/effects/SkPackBits.cpp",
   "$_src/effects/SkPackBits.h",
   "$_src/effects/SkPaintFlagsDrawFilter.cpp",
-  "$_src/effects/SkPaintImageFilter.cpp",
-  "$_src/effects/SkPictureImageFilter.cpp",
   "$_src/effects/SkShaderMaskFilter.cpp",
   "$_src/effects/SkTableColorFilter.cpp",
   "$_src/effects/SkTableMaskFilter.cpp",
-  "$_src/effects/SkTileImageFilter.cpp",
   "$_src/effects/SkToSRGBColorFilter.cpp",
   "$_src/effects/SkTrimPathEffect.cpp",
-  "$_src/effects/SkXfermodeImageFilter.cpp",
 
   "$_src/shaders/SkPerlinNoiseShader.cpp",
   "$_src/shaders/gradients/Sk4fGradientBase.cpp",
@@ -73,37 +56,20 @@ skia_effects_sources = [
 
   "$_include/effects/Sk1DPathEffect.h",
   "$_include/effects/Sk2DPathEffect.h",
-  "$_include/effects/SkAlphaThresholdFilter.h",
-  "$_include/effects/SkArithmeticImageFilter.h",
   "$_include/effects/SkBlurDrawLooper.h",
-  "$_include/effects/SkBlurImageFilter.h",
   "$_include/effects/SkBlurMaskFilter.h",
-  "$_include/effects/SkColorFilterImageFilter.h",
   "$_include/effects/SkColorMatrix.h",
   "$_include/effects/SkColorMatrixFilter.h",
   "$_include/effects/SkCornerPathEffect.h",
   "$_include/effects/SkDashPathEffect.h",
   "$_include/effects/SkDiscretePathEffect.h",
-  "$_include/effects/SkDisplacementMapEffect.h",
-  "$_include/effects/SkDropShadowImageFilter.h",
   "$_include/effects/SkGradientShader.h",
-  "$_include/effects/SkImageSource.h",
   "$_include/effects/SkLayerDrawLooper.h",
-  "$_include/effects/SkLightingImageFilter.h",
   "$_include/effects/SkLumaColorFilter.h",
-  "$_include/effects/SkMagnifierImageFilter.h",
-  "$_include/effects/SkMorphologyImageFilter.h",
-  "$_include/effects/SkOffsetImageFilter.h",
   "$_include/effects/SkOverdrawColorFilter.h",
   "$_include/effects/SkPaintFlagsDrawFilter.h",
-  "$_include/effects/SkPaintImageFilter.h",
   "$_include/effects/SkPerlinNoiseShader.h",
   "$_include/effects/SkTableColorFilter.h",
   "$_include/effects/SkTableMaskFilter.h",
-  "$_include/effects/SkTileImageFilter.h",
   "$_include/effects/SkToSRGBColorFilter.h",
-  "$_include/effects/SkXfermodeImageFilter.h",
 ]
-
-# this will move to a real file after we land a reference to this in chrome
-skia_effects_imagefilter_sources = []
diff --git a/gn/effects_imagefilters.gni b/gn/effects_imagefilters.gni
new file mode 100644
index 0000000000..70c30c8d0b
--- /dev/null
+++ b/gn/effects_imagefilters.gni
@@ -0,0 +1,44 @@
+# Copyright 2016 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Things are easiest for everyone if these source paths are absolute.
+_src = get_path_info("../src", "abspath")
+_include = get_path_info("../include", "abspath")
+
+skia_effects_imagefilter_sources = [
+  "$_src/ports/SkGlobalInitialization_default_imagefilters.cpp",
+
+  "$_src/effects/imagefilters/SkAlphaThresholdFilter.cpp",
+  "$_src/effects/imagefilters/SkArithmeticImageFilter.cpp",
+  "$_src/effects/imagefilters/SkColorFilterImageFilter.cpp",
+  "$_src/effects/imagefilters/SkComposeImageFilter.cpp",
+  "$_src/effects/imagefilters/SkDisplacementMapEffect.cpp",
+  "$_src/effects/imagefilters/SkDropShadowImageFilter.cpp",
+  "$_src/effects/imagefilters/SkImageSource.cpp",
+  "$_src/effects/imagefilters/SkLightingImageFilter.cpp",
+  "$_src/effects/imagefilters/SkMagnifierImageFilter.cpp",
+  "$_src/effects/imagefilters/SkMatrixConvolutionImageFilter.cpp",
+  "$_src/effects/imagefilters/SkMergeImageFilter.cpp",
+  "$_src/effects/imagefilters/SkMorphologyImageFilter.cpp",
+  "$_src/effects/imagefilters/SkOffsetImageFilter.cpp",
+  "$_src/effects/imagefilters/SkPaintImageFilter.cpp",
+  "$_src/effects/imagefilters/SkPictureImageFilter.cpp",
+  "$_src/effects/imagefilters/SkTileImageFilter.cpp",
+  "$_src/effects/imagefilters/SkXfermodeImageFilter.cpp",
+
+  "$_include/effects/SkAlphaThresholdFilter.h",
+  "$_include/effects/SkArithmeticImageFilter.h",
+  "$_include/effects/SkColorFilterImageFilter.h",
+  "$_include/effects/SkDisplacementMapEffect.h",
+  "$_include/effects/SkDropShadowImageFilter.h",
+  "$_include/effects/SkImageSource.h",
+  "$_include/effects/SkLightingImageFilter.h",
+  "$_include/effects/SkMagnifierImageFilter.h",
+  "$_include/effects/SkMorphologyImageFilter.h",
+  "$_include/effects/SkOffsetImageFilter.h",
+  "$_include/effects/SkPaintImageFilter.h",
+  "$_include/effects/SkTileImageFilter.h",
+  "$_include/effects/SkXfermodeImageFilter.h",
+]
diff --git a/gn/shared_sources.gni b/gn/shared_sources.gni
index 6df999921a..648d3ee7a9 100644
--- a/gn/shared_sources.gni
+++ b/gn/shared_sources.gni
@@ -5,6 +5,7 @@
 
 import("core.gni")
 import("effects.gni")
+import("effects_imagefilters.gni")
 import("gpu.gni")
 import("opts.gni")
 import("pdf.gni")