Revert of [blink] Unique pointers in Platform.h

chrome/renderer/tts_dispatcher.h

 // Copyright (c) 2013 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_RENDERER_TTS_DISPATCHER_H_
 #define CHROME_RENDERER_TTS_DISPATCHER_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 14 matching lines @@
 // Each TtsDispatcher is owned by the WebSpeechSynthesizerClient in Blink;
 // it registers itself to listen to IPC upon construction and unregisters
 // itself when deleted. There can be multiple TtsDispatchers alive at once,
 // so each one routes IPC messages to its WebSpeechSynthesizerClient only if
 // the utterance id (which is globally unique) matches.
 class TtsDispatcher
     : public blink::WebSpeechSynthesizer,
       public content::RenderThreadObserver {
  public:
   explicit TtsDispatcher(blink::WebSpeechSynthesizerClient* client);
+
+ private:
   ~TtsDispatcher() override;
 
- private:
   // RenderThreadObserver override.
   bool OnControlMessageReceived(const IPC::Message& message) override;
 
   // blink::WebSpeechSynthesizer implementation.
   void UpdateVoiceList() override;
   void Speak(const blink::WebSpeechSynthesisUtterance& utterance) override;
   void Pause() override;
   void Resume() override;
   void Cancel() override;
 
@@ skipping 19 matching lines @@
   // Next utterance id, used to map response IPCs to utterance objects.
   static int next_utterance_id_;
 
   // Map from id to utterance objects.
   base::hash_map<int, blink::WebSpeechSynthesisUtterance> utterance_id_map_;
 
   DISALLOW_COPY_AND_ASSIGN(TtsDispatcher);
 };
 
 #endif  // CHROME_RENDERER_TTS_DISPATCHER_H_