Remove a bunch of stale entries from our BUILD.gn files.

tools/gn/secondary/skia/BUILD.gn

Index: tools/gn/secondary/skia/BUILD.gn
diff --git a/tools/gn/secondary/skia/BUILD.gn b/tools/gn/secondary/skia/BUILD.gn
index b51feb215b4c911dbeedb0db5112e5652739d2c3..6a2ed7dc030570680384dbb0f4b9ff1ad7867085 100644
--- a/tools/gn/secondary/skia/BUILD.gn
+++ b/tools/gn/secondary/skia/BUILD.gn
@@ -65,8 +65,6 @@ skia_chrome_sources = [
   "ext/bitmap_platform_device.h",
   "ext/bitmap_platform_device_android.cc",
   "ext/bitmap_platform_device_android.h",
-  "ext/bitmap_platform_device_linux.cc",
-  "ext/bitmap_platform_device_linux.h",
   "ext/bitmap_platform_device_mac.cc",
   "ext/bitmap_platform_device_mac.h",
   "ext/bitmap_platform_device_win.cc",
@@ -78,8 +76,6 @@ skia_chrome_sources = [
   "ext/image_operations.h",
   "ext/lazy_pixel_ref.cc",
   "ext/lazy_pixel_ref.h",
-  "ext/lazy_pixel_ref_utils.cc",
-  "ext/lazy_pixel_ref_utils.h",
   "ext/SkThread_chrome.cc",
   "ext/opacity_draw_filter.cc",
   "ext/opacity_draw_filter.h",
@@ -218,8 +214,6 @@ skia_library_sources = [
   "//third_party/skia/src/core/SkAdvancedTypefaceMetrics.cpp",
   "//third_party/skia/src/core/SkAlphaRuns.cpp",
   "//third_party/skia/src/core/SkAntiRun.h",
-  "//third_party/skia/src/core/SkBBoxHierarchy.cpp",
-  "//third_party/skia/src/core/SkBBoxHierarchy.h",
   "//third_party/skia/src/core/SkBBoxRecord.cpp",
   "//third_party/skia/src/core/SkBBoxRecord.h",
   "//third_party/skia/src/core/SkBBoxHierarchyRecord.cpp",
@@ -248,7 +242,6 @@ skia_library_sources = [
   "//third_party/skia/src/core/SkBlitRow_D32.cpp",
   "//third_party/skia/src/core/SkBlitter.h",
   "//third_party/skia/src/core/SkBlitter.cpp",
-  "//third_party/skia/src/core/SkBlitter_A1.cpp",
   "//third_party/skia/src/core/SkBlitter_A8.cpp",
   "//third_party/skia/src/core/SkBlitter_ARGB32.cpp",
   "//third_party/skia/src/core/SkBlitter_RGB16.cpp",
@@ -265,8 +258,6 @@ skia_library_sources = [
   "//third_party/skia/src/core/SkConfig8888.h",
   "//third_party/skia/src/core/SkConvolver.cpp",
   "//third_party/skia/src/core/SkConvolver.h",
-  "//third_party/skia/src/core/SkCordic.cpp",
-  "//third_party/skia/src/core/SkCordic.h",
   "//third_party/skia/src/core/SkCoreBlitters.h",
   "//third_party/skia/src/core/SkCubicClipper.cpp",
   "//third_party/skia/src/core/SkCubicClipper.h",
@@ -351,7 +342,6 @@ skia_library_sources = [
   "//third_party/skia/src/core/SkRasterClip.cpp",
   "//third_party/skia/src/core/SkRasterizer.cpp",
   "//third_party/skia/src/core/SkRect.cpp",
-  "//third_party/skia/src/core/SkRefCnt.cpp",
   "//third_party/skia/src/core/SkRefDict.cpp",
   "//third_party/skia/src/core/SkRegion.cpp",
   "//third_party/skia/src/core/SkRegionPriv.h",
@@ -403,7 +393,6 @@ skia_library_sources = [
 
   "//third_party/skia/src/doc/SkDocument.cpp",
 
-  "//third_party/skia/src/image/SkDataPixelRef.cpp",
   "//third_party/skia/src/image/SkImage.cpp",
   "//third_party/skia/src/image/SkImagePriv.cpp",
   "//third_party/skia/src/image/SkImage_Codec.cpp",
@@ -510,18 +499,10 @@ skia_library_sources = [
   "//third_party/skia/include/core/SkXfermode.h",
 
   # Lazy decoding:
-  "//third_party/skia/include/lazy/SkBitmapFactory.h",
   "//third_party/skia/include/lazy/SkImageCache.h",
-  "//third_party/skia/include/lazy/SkLruImageCache.h",
-  "//third_party/skia/include/lazy/SkPurgeableImageCache.h",
 
-  "//third_party/skia/src/lazy/SkBitmapFactory.cpp",
-  "//third_party/skia/src/lazy/SkLazyPixelRef.h",
-  "//third_party/skia/src/lazy/SkLazyPixelRef.cpp",
-  "//third_party/skia/src/lazy/SkLruImageCache.cpp",
   "//third_party/skia/src/lazy/SkPurgeableMemoryBlock.h",
   "//third_party/skia/src/lazy/SkPurgeableMemoryBlock_common.cpp",
-  "//third_party/skia/src/lazy/SkPurgeableImageCache.cpp",
 
   # Path ops
   "//third_party/skia/include/pathops/SkPathOps.h",
@@ -586,7 +567,6 @@ skia_library_sources = [
   "//third_party/skia/src/effects/SkArithmeticMode.cpp",
   "//third_party/skia/src/effects/SkAvoidXfermode.cpp",
   "//third_party/skia/src/effects/SkBicubicImageFilter.cpp",
-  "//third_party/skia/src/effects/SkBitmapAlphaThresholdShader.cpp",
   "//third_party/skia/src/effects/SkBitmapSource.cpp",
   "//third_party/skia/src/effects/SkBlurDrawLooper.cpp",
   "//third_party/skia/src/effects/SkBlurMask.cpp",
@@ -614,7 +594,6 @@ skia_library_sources = [
   "//third_party/skia/src/effects/SkLayerRasterizer.cpp",
   "//third_party/skia/src/effects/SkLerpXfermode.cpp",
   "//third_party/skia/src/effects/SkLightingImageFilter.cpp",
-  "//third_party/skia/src/effects/SkLumaXfermode.cpp",
   "//third_party/skia/src/effects/SkMagnifierImageFilter.cpp",
   "//third_party/skia/src/effects/SkMatrixConvolutionImageFilter.cpp",
   "//third_party/skia/src/effects/SkMergeImageFilter.cpp",
@@ -656,7 +635,6 @@ skia_library_sources = [
   "//third_party/skia/include/effects/SkXfermodeImageFilter.h",
   "//third_party/skia/include/effects/SkArithmeticMode.h",
   "//third_party/skia/include/effects/SkAvoidXfermode.h",
-  "//third_party/skia/include/effects/SkBitmapAlphaThresholdShader.h",
   "//third_party/skia/include/effects/SkBitmapSource.h",
   "//third_party/skia/include/effects/SkBlurDrawLooper.h",
   "//third_party/skia/include/effects/SkBlurImageFilter.h",
@@ -677,7 +655,6 @@ skia_library_sources = [
   "//third_party/skia/include/effects/SkLayerRasterizer.h",
   "//third_party/skia/include/effects/SkLerpXfermode.h",
   "//third_party/skia/include/effects/SkLightingImageFilter.h",
-  "//third_party/skia/include/effects/SkLumaXfermode.h",
   "//third_party/skia/include/effects/SkOffsetImageFilter.h",
   "//third_party/skia/include/effects/SkMorphologyImageFilter.h",
   "//third_party/skia/include/effects/SkPaintFlagsDrawFilter.h",
@@ -764,7 +741,6 @@ skia_library_sources = [
   "//third_party/skia/src/ports/SkOSFile_stdio.cpp",
   "//third_party/skia/src/ports/SkOSFile_win.cpp",
   "//third_party/skia/src/ports/SkPurgeableMemoryBlock_none.cpp",
-  "//third_party/skia/src/ports/SkThread_pthread.cpp",
   "//third_party/skia/src/ports/SkThread_win.cpp",
   "//third_party/skia/src/ports/SkTime_Unix.cpp",
   "//third_party/skia/src/ports/SkTLS_pthread.cpp",
@@ -851,8 +827,6 @@ if (skia_support_gpu) {
     "//third_party/skia/src/gpu/effects/GrSimpleTextureEffect.h",
     "//third_party/skia/src/gpu/effects/GrSingleTextureEffect.cpp",
     "//third_party/skia/src/gpu/effects/GrSingleTextureEffect.h",
-    "//third_party/skia/src/gpu/effects/GrTextureDomainEffect.cpp",
-    "//third_party/skia/src/gpu/effects/GrTextureDomainEffect.h",
     "//third_party/skia/src/gpu/effects/GrTextureStripAtlas.cpp",
     "//third_party/skia/src/gpu/effects/GrTextureStripAtlas.h",
     "//third_party/skia/src/gpu/gl/GrGLBufferImpl.cpp",
@@ -861,8 +835,6 @@ if (skia_support_gpu) {
     "//third_party/skia/src/gpu/gl/GrGLCaps.h",
     "//third_party/skia/src/gpu/gl/GrGLContext.cpp",
     "//third_party/skia/src/gpu/gl/GrGLContext.h",
-    "//third_party/skia/src/gpu/gl/GrGLCoordTransform.cpp",
-    "//third_party/skia/src/gpu/gl/GrGLCoordTransform.h",
     "//third_party/skia/src/gpu/gl/GrGLCreateNativeInterface_none.cpp",
     "//third_party/skia/src/gpu/gl/GrGLDefaultInterface_none.cpp",
     "//third_party/skia/src/gpu/gl/GrGLDefines.h",
@@ -938,8 +910,6 @@ if (skia_support_gpu) {
     "//third_party/skia/src/gpu/GrDrawTarget.cpp",
     "//third_party/skia/src/gpu/GrDrawTarget.h",
     "//third_party/skia/src/gpu/GrEffect.cpp",
-    "//third_party/skia/src/gpu/GrGeometryBuffer.cpp",
-    "//third_party/skia/src/gpu/GrGeometryBuffer.h",
     "//third_party/skia/src/gpu/GrGpu.cpp",
     "//third_party/skia/src/gpu/GrGpuFactory.cpp",
     "//third_party/skia/src/gpu/GrGpu.h",
@@ -989,7 +959,6 @@ if (skia_support_gpu) {
     "//third_party/skia/src/gpu/GrTextureAccess.cpp",
     "//third_party/skia/src/gpu/GrTexture.cpp",
     "//third_party/skia/src/gpu/GrTHashCache.h",
-    "//third_party/skia/src/gpu/gr_unittests.cpp",
     "//third_party/skia/src/gpu/GrVertexBuffer.h",
     "//third_party/skia/src/gpu/SkGpuDevice.cpp",
     "//third_party/skia/src/gpu/SkGr.cpp",
@@ -1003,7 +972,6 @@ if (skia_support_gpu) {
 if (is_win) {
   skia_library_sources -= [
     "//third_party/skia/src/ports/SkOSFile_posix.cpp",
-    "//third_party/skia/src/ports/SkThread_pthread.cpp",
     "//third_party/skia/src/ports/SkTime_Unix.cpp",
     "//third_party/skia/src/ports/SkTLS_pthread.cpp",
     "//third_party/skia/src/ports/SkFontConfigInterface_direct.cpp",