Replace usage of WebVector::isEmpty with WebVector::empty().

content/renderer/media/video_track_to_pepper_adapter.cc

 // 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.
 
 #include "content/renderer/media/video_track_to_pepper_adapter.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 93 matching lines @@
       : blink::WebMediaStreamRegistry::lookupMediaStreamDescriptor(GURL(url));
 
   if (stream.isNull()) {
     LOG(ERROR) << "GetFirstVideoSource - invalid url: " << url;
     return blink::WebMediaStreamTrack();
   }
 
   // Get the first video track from the stream.
   blink::WebVector<blink::WebMediaStreamTrack> video_tracks;
   stream.videoTracks(video_tracks);
-  if (video_tracks.isEmpty()) {
+  if (video_tracks.empty()) {
     LOG(ERROR) << "GetFirstVideoSource - no video tracks. url: " << url;
     return blink::WebMediaStreamTrack();
   }
 
   return video_tracks[0];
 }
 
 void VideoTrackToPepperAdapter::DeliverFrameForTesting(
     FrameReaderInterface* reader,
     const scoped_refptr<media::VideoFrame>& frame) {
   SourceInfoMap::const_iterator it = reader_to_receiver_.find(reader);
   if (it == reader_to_receiver_.end())
     return;
   PpFrameReceiver* receiver = it->second->receiver_.get();
   receiver->OnVideoFrame(frame, base::TimeTicks());
 }
 
 VideoTrackToPepperAdapter::SourceInfo::SourceInfo(
     const blink::WebMediaStreamTrack& blink_track,
     FrameReaderInterface* reader)
     : receiver_(new PpFrameReceiver(blink_track)) {
   receiver_->SetReader(reader);
 }
 
 VideoTrackToPepperAdapter::SourceInfo::~SourceInfo() {
   receiver_->SetReader(NULL);
 }
 
 }  // namespace content