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

public/platform/WebLayer.h

Index: public/platform/WebLayer.h
diff --git a/public/platform/WebLayer.h b/public/platform/WebLayer.h
index f4fcc94d70a8173e5b168e517cfb5ef045cb8fc7..10184199a864ebff8b8d40d117b2edea98bb7b76 100644
--- a/public/platform/WebLayer.h
+++ b/public/platform/WebLayer.h
@@ -199,6 +199,9 @@ public:
     virtual void setTouchEventHandlerRegion(const WebVector<WebRect>&) = 0;
     virtual WebVector<WebRect> touchEventHandlerRegion() const = 0;
 
+    virtual void setFrameTimingRequests(const WebVector<std::pair<int64_t, WebRect>>&) = 0;
+    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;};