Fixed the speech crash when the render view has gone away then users click "try again"

content/public/browser/speech_recognition_manager_delegate.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_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
@@ skipping 12 matching lines @@
 
   // Get the optional diagnostic hardware information if available.
   virtual void GetDiagnosticInformation(bool* can_report_metrics,
                                         std::string* hardware_info) = 0;
 
   // Checks (asynchronously) if current setup allows speech recognition.
   virtual void CheckRecognitionIsAllowed(
       int session_id,
       base::Callback<void(bool ask_user, bool is_allowed)> callback) = 0;
 
+  // Called when the event listener is going away for the sessions.
+  virtual void OnAbortSessionsForListener(
+      SpeechRecognitionEventListener* listener) = 0;
+
   // Checks whether the delegate is interested (returning a non NULL ptr) or not
   // (returning NULL) in receiving a copy of all sessions events.
   virtual SpeechRecognitionEventListener* GetEventListener() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_