Ignore DevTools messages from the old inspected RVH after navigation

content/browser/devtools/render_view_devtools_agent_host.h

Index: content/browser/devtools/render_view_devtools_agent_host.h
diff --git a/content/browser/devtools/render_view_devtools_agent_host.h b/content/browser/devtools/render_view_devtools_agent_host.h
index eaa87dc33f45d484b66142031c4b23b395388582..c675c138e6c72da857cef10b72ce37f8377144c0 100644
--- a/content/browser/devtools/render_view_devtools_agent_host.h
+++ b/content/browser/devtools/render_view_devtools_agent_host.h
@@ -47,6 +47,8 @@ class CONTENT_EXPORT RenderViewDevToolsAgentHost
  public:
   static void OnCancelPendingNavigation(RenderViewHost* pending,
                                         RenderViewHost* current);
+  static bool DispatchIPCMessage(RenderViewHost* source,
+                                 const IPC::Message& message);
 
   RenderViewDevToolsAgentHost(RenderViewHost*);
 
@@ -80,9 +82,6 @@ class CONTENT_EXPORT RenderViewDevToolsAgentHost
                              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;