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

content/public/browser/speech_recognition_manager_delegate.h

Index: content/public/browser/speech_recognition_manager_delegate.h
diff --git a/content/public/browser/speech_recognition_manager_delegate.h b/content/public/browser/speech_recognition_manager_delegate.h
index 7b729d16b30387eddc1d34270837002395039964..1e77ad5f9ef6a4f9e95506b4750ea0253415247f 100644
--- a/content/public/browser/speech_recognition_manager_delegate.h
+++ b/content/public/browser/speech_recognition_manager_delegate.h
@@ -30,6 +30,10 @@ class SpeechRecognitionManagerDelegate {
       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;