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

Source/core/frame/Frame.h

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999-2001 Lars Knoll <knoll@kde.org>
  *                     1999-2001 Antti Koivisto <koivisto@kde.org>
  *                     2000-2001 Simon Hausmann <hausmann@kde.org>
  *                     2000-2001 Dirk Mueller <mueller@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
@@ skipping 83 matching lines @@
     Frame* findFrameForNavigation(const AtomicString& name, Frame& activeFrame);
     Frame* findUnsafeParentScrollPropagationBoundary();
 
     void finishSwapFrom(Frame*);
 
     bool canNavigate(const Frame&);
     virtual void printNavigationErrorMessage(const Frame&, const char* reason) = 0;
 
     LayoutPart* ownerLayoutObject() const; // LayoutObject for the element that contains this frame.
 
+    int64_t frameID() const { return m_frameID; }
+
     Settings* settings() const; // can be null
 
     // isLoading() is true when the embedder should think a load is in progress.
     // In the case of LocalFrames, it means that the frame has sent a didStartLoading()
     // callback, but not the matching didStopLoading(). Inside blink, you probably
     // want Document::loadEventFinished() instead.
     void setIsLoading(bool isLoading) { m_isLoading = isLoading; }
     bool isLoading() const { return m_isLoading; }
     virtual bool isLoadingAsChild() const { return isLoading(); }
 
 protected:
     Frame(FrameClient*, FrameHost*, FrameOwner*);
 
     virtual WindowProxyManager* windowProxyManager() const = 0;
 
     mutable FrameTree m_treeNode;
 
     RawPtrWillBeMember<FrameHost> m_host;
     RawPtrWillBeMember<FrameOwner> m_owner;
 
 private:
     FrameClient* m_client;
+    // Needed to identify Frame Timing requests.
+    int64_t m_frameID;
     bool m_isLoading;
 };
 
 inline FrameClient* Frame::client() const
 {
     return m_client;
 }
 
 inline FrameOwner* Frame::owner() const
 {
     return m_owner;
 }
 
 inline FrameTree& Frame::tree() const
 {
     return m_treeNode;
 }
 
 // Allow equality comparisons of Frames by reference or pointer, interchangeably.
 DEFINE_COMPARISON_OPERATORS_WITH_REFERENCES_REFCOUNTED(Frame)
 
 } // namespace blink
 
 #endif // Frame_h