Makes RenderFrameObserver/RenderViewObserver::OnDestruct pure virtual.

content/renderer/speech_recognition_dispatcher.cc

 // 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.
 
 #include "content/renderer/speech_recognition_dispatcher.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <utility>
 
@@ skipping 48 matching lines @@
     IPC_MESSAGE_HANDLER(SpeechRecognitionMsg_Ended, OnRecognitionEnded)
     IPC_MESSAGE_HANDLER(SpeechRecognitionMsg_ResultRetrieved,
                         OnResultsRetrieved)
     IPC_MESSAGE_HANDLER(SpeechRecognitionMsg_AudioReceiverReady,
                         OnAudioReceiverReady)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
+void SpeechRecognitionDispatcher::OnDestruct() {
+  delete this;
+}
+
 void SpeechRecognitionDispatcher::start(
     const WebSpeechRecognitionHandle& handle,
     const WebSpeechRecognitionParams& params,
     WebSpeechRecognizerClient* recognizer_client) {
   DCHECK(!recognizer_client_ || recognizer_client_ == recognizer_client);
   recognizer_client_ = recognizer_client;
 
 #if defined(ENABLE_WEBRTC)
   const blink::WebMediaStreamTrack track = params.audioTrack();
   if (!track.isNull()) {
@@ skipping 237 matching lines @@
 }
 
 const WebSpeechRecognitionHandle& SpeechRecognitionDispatcher::GetHandleFromID(
     int request_id) {
   HandleMap::iterator iter = handle_map_.find(request_id);
   CHECK(iter != handle_map_.end());
   return iter->second;
 }
 
 }  // namespace content