Move more of the plugin code in the renderer to use RenderFrame instead of RenderView.

chrome/browser/extensions/extension_renderer_state.h

Index: chrome/browser/extensions/extension_renderer_state.h
===================================================================
--- chrome/browser/extensions/extension_renderer_state.h	(revision 238847)
+++ chrome/browser/extensions/extension_renderer_state.h	(working copy)
@@ -44,6 +44,9 @@
   bool GetTabAndWindowId(
       int render_process_host_id, int routing_id, int* tab_id, int* window_id);
 
+  // Returns true if the given renderer is used by webviews.
+  bool IsWebViewRenderer(int render_process_id);
+
  private:
   class RenderViewHostObserver;
   class TabObserver;