Cancel any pending speech recognitions when the dispatcher host terminates.

chrome/browser/speech/speech_input_dispatcher_host.h

 // Copyright (c) 2010 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_SPEECH_INPUT_DISPATCHER_HOST_H_
 #define CHROME_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_
 
 #include "base/scoped_ptr.h"
 #include "chrome/browser/browser_message_filter.h"
 #include "chrome/browser/speech/speech_input_manager.h"
@@ skipping 33 matching lines @@
   void OnStartRecognition(
       const SpeechInputHostMsg_StartRecognition_Params &params);
   void OnCancelRecognition(int render_view_id, int request_id);
   void OnStopRecording(int render_view_id, int request_id);
 
   // Returns the speech input manager to forward events to, creating one if
   // needed.
   SpeechInputManager* manager();
 
   int render_process_id_;
+  bool may_have_pending_requests_;  // Set if we received any speech IPC request
 
   static SpeechInputManager::AccessorMethod* manager_accessor_;
 
   DISALLOW_COPY_AND_ASSIGN(SpeechInputDispatcherHost);
 };
 
 }  // namespace speech_input
 
 #endif  // CHROME_BROWSER_SPEECH_SPEECH_INPUT_DISPATCHER_HOST_H_