[SP] Delete GraphicsContextAnnotator.

Source/core/core.gypi

 {
     'includes': [
         'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/KeyframeEffect.idl',
             'animation/EffectModel.idl',
             'animation/AnimationEffectReadOnly.idl',
@@ skipping 1851 matching lines @@
             'paint/FilterEffectBuilder.cpp',
             'paint/FilterEffectBuilder.h',
             'paint/FilterPainter.cpp',
             'paint/FilterPainter.h',
             'paint/FloatClipRecorder.cpp',
             'paint/FloatClipRecorder.h',
             'paint/FramePainter.cpp',
             'paint/FramePainter.h',
             'paint/FrameSetPainter.cpp',
             'paint/FrameSetPainter.h',
-            'paint/GraphicsContextAnnotator.cpp',
-            'paint/GraphicsContextAnnotator.h',
             'paint/GridPainter.cpp',
             'paint/GridPainter.h',
             'paint/HTMLCanvasPainter.cpp',
             'paint/HTMLCanvasPainter.h',
             'paint/ImagePainter.cpp',
             'paint/ImagePainter.h',
             'paint/InlineFlowBoxPainter.cpp',
             'paint/InlineFlowBoxPainter.h',
             'paint/InlinePainter.cpp',
             'paint/InlinePainter.h',
@@ skipping 2012 matching lines @@
             'style/ComputedStyleTest.cpp',
             'style/OutlineValueTest.cpp',
             'style/SVGComputedStyleTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }