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

content/browser/web_contents/web_contents_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_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 334 matching lines @@
   bool Send(IPC::Message* message) override;
 
   // RenderFrameHostDelegate ---------------------------------------------------
   bool OnMessageReceived(RenderFrameHost* render_frame_host,
                          const IPC::Message& message) override;
   const GURL& GetMainFrameLastCommittedURL() const override;
   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
   void DidStartLoading(RenderFrameHost* render_frame_host,
                        bool to_different_document) override;
+  void DidStopLoading(RenderFrameHost* render_frame_host) override;
   void SwappedOut(RenderFrameHost* render_frame_host) override;
   void DidDeferAfterResponseStarted(
       const TransitionLayerData& transition_data) override;
   bool WillHandleDeferAfterResponseStarted() override;
   void WorkerCrashed(RenderFrameHost* render_frame_host) override;
   void ShowContextMenu(RenderFrameHost* render_frame_host,
                        const ContextMenuParams& params) override;
   void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
                             const base::string16& message,
                             const base::string16& default_prompt,
@@ skipping 511 matching lines @@
   WebContentsImpl* GetCreatedWindow(int route_id);
 
   // Tracking loading progress -------------------------------------------------
 
   // Resets the tracking state of the current load.
   void ResetLoadProgressState();
 
   // Calculates the progress of the current load and notifies the delegate.
   void SendLoadProgressChanged();
 
-  // Called once when the last frame on the page has stopped loading.
-  void DidStopLoading(RenderFrameHost* render_frame_host);
-
   // Misc non-view stuff -------------------------------------------------------
 
   // Helper functions for sending notifications.
   void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
   void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
   void NotifyDisconnected();
 
   void SetEncoding(const std::string& encoding);
 
   // TODO(creis): This should take in a FrameTreeNode to know which node's
@@ skipping 331 matching lines @@
   bool virtual_keyboard_requested_;
 
   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_