OOPIF: report both original and destination rfh in AboutToNavigateRenderFrame.

chrome/browser/extensions/api/web_navigation/web_navigation_api.cc

 // 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.
 
 // Implements the Chrome Extensions WebNavigation API.
 
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 306 matching lines @@
     }
   } else if (render_view_host == pending_render_view_host_) {
     pending_render_view_host_ = NULL;
   } else {
     return;
   }
   SendErrorEvents(web_contents(), render_view_host, NULL);
 }
 
 void WebNavigationTabObserver::AboutToNavigateRenderFrame(
-    content::RenderFrameHost* render_frame_host) {
+    content::RenderFrameHost* old_host,
+    content::RenderFrameHost* new_host) {
   content::RenderViewHost* render_view_host =
-      render_frame_host->GetRenderViewHost();
+      new_host->GetRenderViewHost();
   if (!render_view_host_) {
     render_view_host_ = render_view_host;
   } else if (render_view_host != render_view_host_) {
     if (pending_render_view_host_) {
       SendErrorEvents(web_contents(), pending_render_view_host_, NULL);
     }
     pending_render_view_host_ = render_view_host;
   }
 }
 
@@ skipping 426 matching lines @@
   return g_factory.Pointer();
 }
 
 void WebNavigationAPI::OnListenerAdded(const EventListenerInfo& details) {
   web_navigation_event_router_.reset(new WebNavigationEventRouter(
       Profile::FromBrowserContext(browser_context_)));
   EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
 }  // namespace extensions