Blink changes to record interest rects for http://w3c.github.io/frame-timing/

public/platform/WebLayer.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 181 matching lines @@
 
     virtual void setShouldScrollOnMainThread(bool) = 0;
     virtual bool shouldScrollOnMainThread() const = 0;
 
     virtual void setNonFastScrollableRegion(const WebVector<WebRect>&) = 0;
     virtual WebVector<WebRect> nonFastScrollableRegion() const = 0;
 
     virtual void setTouchEventHandlerRegion(const WebVector<WebRect>&) = 0;
     virtual WebVector<WebRect> touchEventHandlerRegion() const = 0;
 
+    virtual void setFrameTimingRequests(const WebVector<std::pair<int64_t, WebRect>>&) = 0;

[chrishtr, 2015/05/09 00:51:52]

Add a comment referencing the feature spec, similar to what you put in
WebWidget.

[MikeB, 2015/05/11 23:10:52]

Done.

+    virtual WebVector<std::pair<int64_t, WebRect>> frameTimingRequests() const = 0;
+
     // FIXME: Make pure once cc is updated.  crbug.com/347272
     virtual void setScrollBlocksOn(WebScrollBlocksOn) { };
     virtual WebScrollBlocksOn scrollBlocksOn() const { return WebScrollBlocksOnNone;};
 
     virtual void setIsContainerForFixedPositionLayers(bool) = 0;
     virtual bool isContainerForFixedPositionLayers() const = 0;
 
     // This function sets layer position constraint. The constraint will be used
     // to adjust layer position during threaded scrolling.
     virtual void setPositionConstraint(const WebLayerPositionConstraint&) = 0;
@@ skipping 12 matching lines @@
 
     // True if the layer is not part of a tree attached to a WebLayerTreeView.
     virtual bool isOrphan() const = 0;
 
     virtual void setWebLayerClient(WebLayerClient*) = 0;
 };
 
 } // namespace blink
 
 #endif // WebLayer_h