If the renderer drops a navigation, make sure the spinner doesn't spin endlessly.

content/renderer/render_frame_impl.cc

 // Copyright 2013 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.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 938 matching lines @@
                "id", routing_id_,
                "url", params.common_params.url.possibly_invalid_spec());
   bool is_reload =
       RenderViewImpl::IsReload(params.common_params.navigation_type);
   WebURLRequest::CachePolicy cache_policy =
       WebURLRequest::UseProtocolCachePolicy;
   if (!RenderFrameImpl::PrepareRenderViewForNavigation(
       params.common_params.url, params.common_params.navigation_type,
       params.commit_params.page_state, true, params.pending_history_list_offset,
       params.page_id, &is_reload, &cache_policy)) {
+    Send(new FrameHostMsg_DidDropNavigation(routing_id_));
     return;
   }
 
   int pending_history_list_offset = params.pending_history_list_offset;
   int current_history_list_offset = params.current_history_list_offset;
   int current_history_list_length = params.current_history_list_length;
   if (params.should_clear_history_list) {
     CHECK_EQ(pending_history_list_offset, -1);
     CHECK_EQ(current_history_list_offset, -1);
     CHECK_EQ(current_history_list_length, 0);
@@ skipping 3297 matching lines @@
 
 #if defined(ENABLE_BROWSER_CDMS)
 RendererCdmManager* RenderFrameImpl::GetCdmManager() {
   if (!cdm_manager_)
     cdm_manager_ = new RendererCdmManager(this);
   return cdm_manager_;
 }
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
 }  // namespace content