Almost finish moving context_menu_node_ from RenderViewImpl to RenderFrameImpl.

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
===================================================================
--- content/renderer/render_view_impl.h	(revision 254898)
+++ content/renderer/render_view_impl.h	(working copy)
@@ -458,6 +458,7 @@
   virtual void focusNext();
   virtual void focusPrevious();
   virtual void focusedNodeChanged(const blink::WebNode& node);
+  virtual void focusedFrameChanged(blink::WebFrame* frame);
   virtual void numberOfWheelEventHandlersChanged(unsigned num_handlers);
   virtual void didUpdateLayout();
 #if defined(OS_ANDROID)
@@ -841,12 +842,9 @@
   // The documentation for these functions should be in
   // content/common/*_messages.h for the message that the function is handling.
 
-  void OnCopy();
-  void OnCut();
   void OnDelete();
   void OnExecuteEditCommand(const std::string& name, const std::string& value);
   void OnMoveCaret(const gfx::Point& point);
-  void OnPaste();
   void OnPasteAndMatchStyle();
   void OnRedo();
   void OnReplace(const base::string16& text);