Fix build failure with "enable_webrtc = false".

content/renderer/renderer_blink_platform_impl.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/renderer_blink_platform_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 947 matching lines @@
           web_media_player, content::RenderThread::Get()->GetIOTaskRunner()),
       false,  // is_remote
       false,  // is_readonly
       web_media_stream);
 #endif
 }
 
 void RendererBlinkPlatformImpl::createHTMLAudioElementCapturer(
     WebMediaStream* web_media_stream,
     WebMediaPlayer* web_media_player) {
+#if defined(ENABLE_WEBRTC)
   DCHECK(web_media_stream);
   DCHECK(web_media_player);
 
   blink::WebMediaStreamSource web_media_stream_source;
   blink::WebMediaStreamTrack web_media_stream_track;
   const WebString track_id = WebString::fromUTF8(base::GenerateGUID());
 
   web_media_stream_source.initialize(track_id,
                                      blink::WebMediaStreamSource::TypeAudio,
                                      track_id,
                                      false /* is_remote */);
   web_media_stream_track.initialize(web_media_stream_source);
 
   MediaStreamAudioSource* const media_stream_source =
       HtmlAudioElementCapturerSource::CreateFromWebMediaPlayerImpl(
           web_media_player);
 
   // Takes ownership of |media_stream_source|.
   web_media_stream_source.setExtraData(media_stream_source);
 
   media_stream_source->ConnectToTrack(web_media_stream_track);
   web_media_stream->addTrack(web_media_stream_track);
+#endif
 }
 
 //------------------------------------------------------------------------------
 
 WebImageCaptureFrameGrabber*
 RendererBlinkPlatformImpl::createImageCaptureFrameGrabber() {
 #if defined(ENABLE_WEBRTC)
   return new ImageCaptureFrameGrabber();
 #else
   return nullptr;
@@ skipping 337 matching lines @@
   return &trial_token_validator_;
 }
 
 void RendererBlinkPlatformImpl::workerContextCreated(
     const v8::Local<v8::Context>& worker) {
   GetContentClient()->renderer()->DidInitializeWorkerContextOnWorkerThread(
       worker);
 }
 
 }  // namespace content