Create PaintChunk and begin writing code to build paint chunks.

third_party/WebKit/Source/platform/blink_platform.gypi

 {
   'includes': [
     'platform_generated.gypi',
   ],
   'variables': {
     'platform_files': [
       'AsyncFileSystemCallbacks.h',
       'CalculationValue.h',
       'CheckedInt.h',
       'Clock.cpp',
@@ skipping 665 matching lines @@
       'graphics/paint/DrawingRecorder.cpp',
       'graphics/paint/DrawingRecorder.h',
       'graphics/paint/FilterDisplayItem.cpp',
       'graphics/paint/FilterDisplayItem.h',
       'graphics/paint/FixedPositionContainerDisplayItem.cpp',
       'graphics/paint/FixedPositionContainerDisplayItem.h',
       'graphics/paint/FixedPositionDisplayItem.cpp',
       'graphics/paint/FixedPositionDisplayItem.h',
       'graphics/paint/FloatClipDisplayItem.cpp',
       'graphics/paint/FloatClipDisplayItem.h',
+      'graphics/paint/PaintChunk.h',
+      'graphics/paint/PaintChunker.cpp',
+      'graphics/paint/PaintChunker.h',
+      'graphics/paint/PaintProperties.h',
       'graphics/paint/ScrollDisplayItem.cpp',
       'graphics/paint/ScrollDisplayItem.h',
       'graphics/paint/SkPictureBuilder.h',
       'graphics/paint/SubsequenceDisplayItem.h',
       'graphics/paint/SubsequenceRecorder.cpp',
       'graphics/paint/SubsequenceRecorder.h',
       'graphics/paint/Transform3DDisplayItem.cpp',
       'graphics/paint/Transform3DDisplayItem.h',
       'graphics/paint/TransformDisplayItem.cpp',
       'graphics/paint/TransformDisplayItem.h',
@@ skipping 290 matching lines @@
       'graphics/ContiguousContainerTest.cpp',
       'graphics/GraphicsContextTest.cpp',
       'graphics/RecordingImageBufferSurfaceTest.cpp',
       'graphics/ThreadSafeDataTransportTest.cpp',
       'graphics/filters/FilterOperationsTest.cpp',
       'graphics/filters/ImageFilterBuilderTest.cpp',
       'graphics/gpu/DrawingBufferTest.cpp',
       'graphics/paint/DisplayItemPropertyTreeBuilderTest.cpp',
       'graphics/paint/DisplayItemListTest.cpp',
       'graphics/paint/DisplayItemTest.cpp',
+      'graphics/paint/PaintChunkerTest.cpp',
       'image-decoders/FastSharedBufferReaderTest.cpp',
       'image-decoders/ImageDecoderTest.cpp',
       'mac/VersionUtilMacTest.mm',
       'network/EncodedFormDataTest.cpp',
       'network/HTTPParsersTest.cpp',
       'network/ResourceRequestTest.cpp',
       'scheduler/CancellableTaskFactoryTest.cpp',
       'scroll/ScrollableAreaTest.cpp',
       'testing/ArenaTestHelpers.h',
       'testing/TreeTestHelpers.cpp',
@@ skipping 37 matching lines @@
     # TODO(jbroman): Move these into platform_test_support_files.
     'platform_unittest_support_files': [
       'testing/URLTestHelpers.cpp',
       'testing/URLTestHelpers.h',
       'testing/UnitTestHelpers.cpp',
       'testing/UnitTestHelpers.h',
     ],
     'platform_test_support_files': [
       'testing/GeometryPrinters.cpp',
       'testing/GeometryPrinters.h',
+      'testing/PaintPrinters.cpp',
+      'testing/PaintPrinters.h',
     ],
     'conditions': [
       ['OS=="win"',
         {
           'platform_test_files': [
             'text/LocaleWinTest.cpp',
           ],
         }
       ],
       ['OS=="mac"',
         {
           'platform_test_files': [
             'text/LocaleMacTest.cpp',
           ]
         }
       ],
       ['os_posix==1 and OS!="mac"',
         {
           'platform_test_files': [
             'text/LocaleICUTest.cpp',
           ],
         }
       ],
     ],
   },
 }