Cancel any pending speech recognitions when the dispatcher host terminates.

chrome/browser/speech/speech_input_manager.cc

Index: chrome/browser/speech/speech_input_manager.cc
diff --git a/chrome/browser/speech/speech_input_manager.cc b/chrome/browser/speech/speech_input_manager.cc
index 25f055074bbd4bdaaf948c8b401478f7d555240f..f76775a85bdf305c1efecbf864d86088f367d904 100644
--- a/chrome/browser/speech/speech_input_manager.cc
+++ b/chrome/browser/speech/speech_input_manager.cc
@@ -102,6 +102,8 @@ class SpeechInputManagerImpl : public SpeechInputManager,
                                 const std::string& grammar);
   virtual void CancelRecognition(int caller_id);
   virtual void StopRecording(int caller_id);
+  virtual void CancelAllRequestsWithDelegate(
+      SpeechInputManagerDelegate* delegate);
 
   // SpeechRecognizer::Delegate methods.
   virtual void SetRecognitionResult(int caller_id,
@@ -254,6 +256,20 @@ void SpeechInputManagerImpl::CancelRecognition(int caller_id) {
   bubble_controller_->CloseBubble(caller_id);
 }
 
+void SpeechInputManagerImpl::CancelAllRequestsWithDelegate(
+    SpeechInputManagerDelegate* delegate) {
+  SpeechRecognizerMap::iterator it = requests_.begin();
+  while (it != requests_.end()) {
+    if (it->second.delegate == delegate) {
+      CancelRecognition(it->first);
+      // This map will have very few elements so it is simpler to restart.
+      it = requests_.begin();
+    } else {
+      ++it;
+    }
+  }
+}
+
 void SpeechInputManagerImpl::StopRecording(int caller_id) {
   DCHECK(HasPendingRequest(caller_id));
   requests_[caller_id].recognizer->StopRecording();