Add rendering context and rendering 2D context to OffscreenCanvas

third_party/WebKit/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 224 matching lines @@
             'html/HTMLTrackElement.idl',
             'html/HTMLUListElement.idl',
             'html/HTMLUnknownElement.idl',
             'html/ImageData.idl',
             'html/MediaError.idl',
             'html/RadioNodeList.idl',
             'html/TextMetrics.idl',
             'html/TimeRanges.idl',
             'html/ValidityState.idl',
             'html/VoidCallback.idl',
-            'html/canvas/OffscreenCanvas.idl',
             'html/track/AudioTrack.idl',
             'html/track/AudioTrackList.idl',
             'html/track/TextTrack.idl',
             'html/track/TextTrackCue.idl',
             'html/track/TextTrackCueList.idl',
             'html/track/TextTrackList.idl',
             'html/track/TrackEvent.idl',
             'html/track/VideoTrack.idl',
             'html/track/VideoTrackList.idl',
             'html/track/vtt/VTTCue.idl',
@@ skipping 2717 matching lines @@
             'html/canvas/CanvasAsyncBlobCreator.cpp',
             'html/canvas/CanvasAsyncBlobCreator.h',
             'html/canvas/CanvasDrawListener.cpp',
             'html/canvas/CanvasDrawListener.h',
             'html/canvas/CanvasFontCache.cpp',
             'html/canvas/CanvasFontCache.h',
             'html/canvas/CanvasImageSource.h',
             'html/canvas/CanvasRenderingContext.cpp',
             'html/canvas/CanvasRenderingContext.h',
             'html/canvas/CanvasRenderingContextFactory.h',
-            'html/canvas/OffscreenCanvas.cpp',
-            'html/canvas/OffscreenCanvas.h',
             'html/forms/BaseButtonInputType.cpp',
             'html/forms/BaseButtonInputType.h',
             'html/forms/BaseCheckableInputType.cpp',
             'html/forms/BaseCheckableInputType.h',
             'html/forms/BaseChooserOnlyDateAndTimeInputType.cpp',
             'html/forms/BaseChooserOnlyDateAndTimeInputType.h',
             'html/forms/BaseClickableWithKeyInputType.cpp',
             'html/forms/BaseClickableWithKeyInputType.h',
             'html/forms/BaseDateAndTimeInputType.cpp',
             'html/forms/BaseDateAndTimeInputType.h',
@@ skipping 1059 matching lines @@
             'style/SVGComputedStyleTest.cpp',
             'svg/SVGPathParserTest.cpp',
             'svg/UnsafeSVGAttributeSanitizationTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'timing/MemoryInfoTest.cpp',
             'workers/WorkerThreadTest.cpp',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }