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

content/public/browser/web_contents.h

Index: content/public/browser/web_contents.h
===================================================================
--- content/public/browser/web_contents.h	(revision 238847)
+++ content/public/browser/web_contents.h	(working copy)
@@ -42,6 +42,7 @@
 class BrowserContext;
 class InterstitialPage;
 class PageState;
+class RenderFrameHost;
 class RenderProcessHost;
 class RenderViewHost;
 class RenderWidgetHostView;
@@ -159,6 +160,9 @@
   // these may change over time.
   virtual RenderProcessHost* GetRenderProcessHost() const = 0;
 
+  // Returns the main frame for the currently active view.
+  virtual RenderFrameHost* GetMainFrame() = 0;
+
   // Gets the current RenderViewHost for this tab.
   virtual RenderViewHost* GetRenderViewHost() const = 0;