Switch ContentSettingsObserver to be a RenderFrameObserver instead of a RenderViewObserver

content/browser/frame_host/navigation_controller_delegate.h

Index: content/browser/frame_host/navigation_controller_delegate.h
===================================================================
--- content/browser/frame_host/navigation_controller_delegate.h	(revision 241294)
+++ content/browser/frame_host/navigation_controller_delegate.h	(working copy)
@@ -16,6 +16,7 @@
 struct NativeWebKeyboardEvent;
 class InterstitialPage;
 class InterstitialPageImpl;
+class RenderFrameHost;
 class RenderViewHost;
 class SiteInstance;
 class WebContents;
@@ -64,8 +65,8 @@
 
   // Methods needed by InterstitialPageImpl.
   virtual bool IsHidden() = 0;
-  virtual void RenderViewForInterstitialPageCreated(
-      RenderViewHost* render_view_host) = 0;
+  virtual void RenderFrameForInterstitialPageCreated(
+      RenderFrameHost* render_frame_host) = 0;
   virtual void AttachInterstitialPage(
       InterstitialPageImpl* interstitial_page) = 0;
   virtual void DetachInterstitialPage() = 0;