Make RenderFrame{Host} objects routable.

content/browser/renderer_host/render_view_host_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 425 matching lines @@
       const base::Closure& callback);
 
   bool is_waiting_for_beforeunload_ack() {
     return is_waiting_for_beforeunload_ack_;
   }
 
   bool is_waiting_for_unload_ack() {
     return is_waiting_for_unload_ack_;
   }
 
+  // TODO(nasko): Remove this accessor once RenderFrameHost moves into the frame
+  // tree.
+  RenderFrameHostImpl* main_render_frame_host() const;
+
   // Returns whether the given URL is allowed to commit in the current process.
   // This is a more conservative check than FilterURL, since it will be used to
   // kill processes that commit unauthorized URLs.
   bool CanCommitURL(const GURL& url);
 
   // Checks that the given renderer can request |url|, if not it sets it to
   // about:blank.
   // empty_allowed must be set to false for navigations for security reasons.
   static void FilterURL(ChildProcessSecurityPolicyImpl* policy,
                         const RenderProcessHost* process,
@@ skipping 249 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_IMPL_H_