Remove current implementation of frame timing events.

third_party/WebKit/Source/core/frame/Frame.h

Index: third_party/WebKit/Source/core/frame/Frame.h
diff --git a/third_party/WebKit/Source/core/frame/Frame.h b/third_party/WebKit/Source/core/frame/Frame.h
index 6a78800745453100a6c90a19377f04c65b85689d..8554f00633424e0ebf8f39dc43d0bef64885d663 100644
--- a/third_party/WebKit/Source/core/frame/Frame.h
+++ b/third_party/WebKit/Source/core/frame/Frame.h
@@ -119,8 +119,6 @@ public:
 
     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.
@@ -144,8 +142,6 @@ private:
     bool canNavigateWithoutFramebusting(const Frame&, String& errorReason);
 
     Member<FrameClient> m_client;
-    // Needed to identify Frame Timing requests.
-    int64_t m_frameID;
     bool m_isLoading;
 };