[not for review] Add Draw entries to window Performance Timeline

Source/core/frame/Frame.h

Index: Source/core/frame/Frame.h
diff --git a/Source/core/frame/Frame.h b/Source/core/frame/Frame.h
index 0addb6941e5506656c62e51d60e5a4877d0a5911..a2097885fd9132916bfdbfe7f91d70c723ce0601 100644
--- a/Source/core/frame/Frame.h
+++ b/Source/core/frame/Frame.h
@@ -91,6 +91,8 @@ public:
 
     RenderPart* ownerRenderer() const; // Renderer for the element that contains this frame.
 
+    int64_t frameID() const { return m_frameID; }
+
     // FIXME: These should move to RemoteFrame when that is instantiated.
     void setRemotePlatformLayer(blink::WebLayer*);
     blink::WebLayer* remotePlatformLayer() const { return m_remotePlatformLayer; }
@@ -117,6 +119,9 @@ private:
     FrameClient* m_client;
     HashSet<FrameDestructionObserver*> m_destructionObservers;
 
+    // Temporary hack for history.
+    int64_t m_frameID;
+
     blink::WebLayer* m_remotePlatformLayer;
 };