Move enable_webrtc to a buildflag header.

content/renderer/speech_recognition_dispatcher.h

 // 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.
 
 #ifndef CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_
 #define CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_
 
 #include <map>
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/shared_memory.h"
 #include "base/sync_socket.h"
 #include "content/public/common/speech_recognition_result.h"
 #include "content/public/renderer/render_view_observer.h"
+#include "media/media_features.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/web/WebSpeechRecognitionHandle.h"
 #include "third_party/WebKit/public/web/WebSpeechRecognizer.h"
 
 namespace media {
 class AudioParameters;
 }
 
 namespace content {
 class RenderViewImpl;
-#if defined(ENABLE_WEBRTC)
+#if BUILDFLAG(ENABLE_WEBRTC)
 class SpeechRecognitionAudioSink;
 #endif
 struct SpeechRecognitionError;
 struct SpeechRecognitionResult;
 
 // SpeechRecognitionDispatcher is a delegate for methods used by WebKit for
 // scripted JS speech APIs. It's the complement of
 // SpeechRecognitionDispatcherHost (owned by RenderViewHost).
 class SpeechRecognitionDispatcher : public RenderViewObserver,
                                     public blink::WebSpeechRecognizer {
@@ skipping 34 matching lines @@
 
   void ResetAudioSink();
 
   int GetOrCreateIDForHandle(const blink::WebSpeechRecognitionHandle& handle);
   bool HandleExists(const blink::WebSpeechRecognitionHandle& handle);
   const blink::WebSpeechRecognitionHandle& GetHandleFromID(int handle_id);
 
   // The WebKit client class that we use to send events back to the JS world.
   blink::WebSpeechRecognizerClient* recognizer_client_;
 
-#if defined(ENABLE_WEBRTC)
+#if BUILDFLAG(ENABLE_WEBRTC)
   // Media stream audio track that the speech recognition connects to.
   // Accessed on the render thread.
   blink::WebMediaStreamTrack audio_track_;
 
   // Audio sink used to provide audio from the track.
   std::unique_ptr<SpeechRecognitionAudioSink> speech_audio_sink_;
 #endif
 
   typedef std::map<int, blink::WebSpeechRecognitionHandle> HandleMap;
   HandleMap handle_map_;
   int next_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SpeechRecognitionDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_SPEECH_RECOGNITION_DISPATCHER_H_