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

chrome/browser/speech/chrome_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 CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
 #define CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/speech/speech_recognition_bubble_controller.h"
@@ skipping 35 matching lines @@
   virtual void OnAudioLevelsChange(int session_id, float volume,
                                    float noise_volume) OVERRIDE;
 
   // SpeechRecognitionManagerDelegate methods.
   virtual void GetDiagnosticInformation(bool* can_report_metrics,
                                         std::string* hardware_info) OVERRIDE;
   virtual void CheckRecognitionIsAllowed(
       int session_id,
       base::Callback<void(bool ask_user, bool is_allowed)> callback) OVERRIDE;
   virtual content::SpeechRecognitionEventListener* GetEventListener() OVERRIDE;
+  virtual void OnAbortSessionsForListener(
+      SpeechRecognitionEventListener* listener) OVERRIDE;
 
  private:
   class OptionalRequestInfo;
   class TabWatcher;
 
   // Checks for VIEW_TYPE_TAB_CONTENTS host in the UI thread and notifies back
   // the result in the IO thread through |callback|.
   static void CheckRenderViewType(
       base::Callback<void(bool ask_user, bool is_allowed)> callback,
       int render_process_id,
@@ skipping 14 matching lines @@
   scoped_refptr<OptionalRequestInfo> optional_request_info_;
   scoped_ptr<content::SpeechRecognitionSessionConfig> last_session_config_;
   scoped_refptr<TabWatcher> tab_watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeSpeechRecognitionManagerDelegate);
 };
 
 }  // namespace speech
 
 #endif  // CHROME_BROWSER_SPEECH_CHROME_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_