Ignore DevTools messages from the old inspected RVH after navigation

content/browser/devtools/render_view_devtools_agent_host.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_DEVTOOLS_RENDER_VIEW_DEVTOOLS_AGENT_HOST_H_
 #define CONTENT_BROWSER_DEVTOOLS_RENDER_VIEW_DEVTOOLS_AGENT_HOST_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 65 matching lines @@
   void OnClientDetached() override;
 
   // WebContentsObserver overrides.
   void AboutToNavigateRenderFrame(RenderFrameHost* render_frame_host) override;
   void RenderViewHostChanged(RenderViewHost* old_host,
                              RenderViewHost* new_host) override;
   void RenderViewDeleted(RenderViewHost* rvh) override;
   void RenderProcessGone(base::TerminationStatus status) override;
   bool OnMessageReceived(const IPC::Message& message,
                          RenderFrameHost* render_frame_host) override;
-  bool OnMessageReceived(const IPC::Message& message) override;
   void DidAttachInterstitialPage() override;
   void DidDetachInterstitialPage() override;
   void TitleWasSet(NavigationEntry* entry, bool explicit_set) override;
   void NavigationEntryCommitted(
       const LoadCommittedDetails& load_details) override;
 
   // NotificationObserver overrides:
   void Observe(int type,
                const NotificationSource& source,
                const NotificationDetails& details) override;
@@ skipping 36 matching lines @@
   std::string state_;
   NotificationRegistrar registrar_;
   bool reattaching_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewDevToolsAgentHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVTOOLS_RENDER_VIEW_DEVTOOLS_AGENT_HOST_H_