Make OffscreenCanvas animation in sync with its placeholder canvas's parent frame rate

third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h

Index: third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
diff --git a/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h b/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
index 89a473ae56313d53a6f932df8edd0c6650feda3e..74e0da967b51a282cf9402f3ce1865c5967c365d 100644
--- a/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
+++ b/third_party/WebKit/Source/platform/graphics/CanvasSurfaceLayerBridge.h
@@ -22,6 +22,7 @@ class SurfaceInfo;
 namespace blink {
 
 class WebLayer;
+class WebLayerTreeView;
 
 class PLATFORM_EXPORT CanvasSurfaceLayerBridgeObserver {
  public:
@@ -34,7 +35,8 @@ class PLATFORM_EXPORT CanvasSurfaceLayerBridgeObserver {
 class PLATFORM_EXPORT CanvasSurfaceLayerBridge
     : NON_EXPORTED_BASE(public mojom::blink::OffscreenCanvasSurfaceClient) {
  public:
-  explicit CanvasSurfaceLayerBridge(CanvasSurfaceLayerBridgeObserver*);
+  explicit CanvasSurfaceLayerBridge(CanvasSurfaceLayerBridgeObserver*,
+                                    WebLayerTreeView*);
   ~CanvasSurfaceLayerBridge();
   void createSolidColorLayer();
   WebLayer* getWebLayer() const { return m_webLayer.get(); }
@@ -60,6 +62,7 @@ class PLATFORM_EXPORT CanvasSurfaceLayerBridge
 
   cc::FrameSinkId m_frameSinkId;

[Fady Samuel, 2017/01/19 04:05:43]

const?

[xlai (Olivia), 2017/01/19 16:43:56]

Done.

   cc::SurfaceId m_currentSurfaceId;
+  cc::FrameSinkId m_parentFrameSinkId;

[Fady Samuel, 2017/01/19 04:05:43]

const?

[xlai (Olivia), 2017/01/19 16:43:56]

Done.

 };
 
 }  // namespace blink