compositor-worker: cc->blink mutation plumbing

third_party/WebKit/Source/platform/blink_platform.gypi

 {
   'includes': [
     'platform_generated.gypi',
   ],
   'variables': {
     'platform_files': [
       'AsyncFileSystemCallbacks.h',
       'CalculationValue.h',
       'CheckedInt.h',
       'ContentDecryptionModuleResult.h',
@@ skipping 618 matching lines @@
       'graphics/ImageOrientation.h',
       'graphics/ImagePattern.cpp',
       'graphics/ImagePattern.h',
       'graphics/ImageSource.cpp',
       'graphics/ImageSource.h',
       'graphics/InterceptingCanvas.cpp',
       'graphics/InterceptingCanvas.h',
       'graphics/LinkHighlight.h',
       'graphics/LoggingCanvas.cpp',
       'graphics/LoggingCanvas.h',
+      'graphics/CompositorMutationsTarget.h',
       'graphics/PaintInvalidationReason.cpp',
       'graphics/PaintInvalidationReason.h',
       'graphics/Path.cpp',
       'graphics/Path.h',
       'graphics/PathTraversalState.cpp',
       'graphics/PathTraversalState.h',
       'graphics/Pattern.cpp',
       'graphics/Pattern.h',
       'graphics/ProfilingCanvas.cpp',
       'graphics/ProfilingCanvas.h',
@@ skipping 625 matching lines @@
       ['OS!="mac"',
         {
           'platform_test_files': [
             'scroll/ScrollAnimatorTest.cpp',
           ],
         }
       ],
     ],
   },
 }