Move Color.*, DashArray and DrawLooper to Source/platform/

Source/platform/blink_platform.gypi

 {
   'variables': {
     'platform_files': [
       'AsyncFileSystemCallbacks.h',
       'CalculationValue.cpp',
       'CalculationValue.h',
       'Clock.cpp',
       'Clock.h',
       'ContentType.cpp',
       'ContentType.h',
@@ skipping 246 matching lines @@
       'geometry/LayoutRect.h',
       'geometry/LayoutSize.h',
       'geometry/Region.cpp',
       'geometry/Region.h',
       'geometry/RoundedRect.cpp',
       'geometry/RoundedRect.h',
       'geometry/TransformState.cpp',
       'geometry/TransformState.h',
       'graphics/angle/ANGLEPlatformBridge.cpp',
       'graphics/angle/ANGLEPlatformBridge.h',
+      'graphics/Color.cpp',
+      'graphics/Color.h',
       'graphics/ColorSpace.h',
+      'graphics/DrawLooper.cpp',
+      'graphics/DrawLooper.h',
       'graphics/GraphicsTypes.cpp',
       'graphics/GraphicsTypes.h',
       'graphics/GraphicsTypes3D.h',
       'graphics/ImageOrientation.cpp',
       'graphics/ImageOrientation.h',
       'graphics/PathTraversalState.cpp',
       'graphics/PathTraversalState.h',
       'graphics/ScaledImageFragment.cpp',
       'graphics/ScaledImageFragment.h',
       'graphics/TextRun.cpp',
@@ skipping 118 matching lines @@
       'geometry/RoundedRectTest.cpp',
       'graphics/ThreadSafeDataTransportTest.cpp',
       'testing/ArenaTestHelpers.h',
       'testing/TreeTestHelpers.cpp',
       'testing/TreeTestHelpers.h',
       'text/BidiResolverTest.cpp',
       'text/DateTimeFormatTest.cpp',
     ],
   },
 }