Pass RenderFrameHost* to WebContentsObserver::FrameDetached().

Since each frame has a RenderFrameHost now, just pass that instead of
passing a RVH + frame routing ID pair.

Review URL: https://codereview.chromium.org/367273002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@281351 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 7a7522a..bf9b50e 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -873,8 +873,7 @@
   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
   gfx::Size GetSizeForNewRenderView();
 
-  void OnFrameRemoved(RenderViewHostImpl* render_view_host,
-                      int frame_routing_id);
+  void OnFrameRemoved(RenderFrameHost* render_frame_host);
 
   // Helper method that's called whenever |preferred_size_| or
   // |preferred_size_for_capture_| changes, to propagate the new value to the