Replace NULL with nullptr in all C++ files.

webrtc/pc/mediastream_unittest.cc

 /*
  *  Copyright 2011 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 36 matching lines @@
   MOCK_METHOD0(OnChanged, void());
 
  private:
   NotifierInterface* notifier_;
 };
 
 class MediaStreamTest: public testing::Test {
  protected:
   virtual void SetUp() {
     stream_ = MediaStream::Create(kStreamLabel1);
-    ASSERT_TRUE(stream_.get() != NULL);
+    ASSERT_TRUE(stream_.get() != nullptr);
 
     video_track_ =
         VideoTrack::Create(kVideoTrackId, FakeVideoTrackSource::Create());
-    ASSERT_TRUE(video_track_.get() != NULL);
+    ASSERT_TRUE(video_track_.get() != nullptr);
     EXPECT_EQ(MediaStreamTrackInterface::kLive, video_track_->state());
 
-    audio_track_ = AudioTrack::Create(kAudioTrackId, NULL);
+    audio_track_ = AudioTrack::Create(kAudioTrackId, nullptr);
 
-    ASSERT_TRUE(audio_track_.get() != NULL);
+    ASSERT_TRUE(audio_track_.get() != nullptr);
     EXPECT_EQ(MediaStreamTrackInterface::kLive, audio_track_->state());
 
     EXPECT_TRUE(stream_->AddTrack(video_track_));
     EXPECT_FALSE(stream_->AddTrack(video_track_));
     EXPECT_TRUE(stream_->AddTrack(audio_track_));
     EXPECT_FALSE(stream_->AddTrack(audio_track_));
   }
 
   void ChangeTrack(MediaStreamTrackInterface* track) {
     MockObserver observer(track);
@@ skipping 51 matching lines @@
   EXPECT_FALSE(stream_->RemoveTrack(audio_track_));
   EXPECT_EQ(0u, stream_->GetAudioTracks().size());
   EXPECT_EQ(0u, stream_->GetAudioTracks().size());
 
   EXPECT_TRUE(stream_->RemoveTrack(video_track_));
   EXPECT_FALSE(stream_->RemoveTrack(video_track_));
 
   EXPECT_EQ(0u, stream_->GetVideoTracks().size());
   EXPECT_EQ(0u, stream_->GetVideoTracks().size());
 
-  EXPECT_FALSE(stream_->RemoveTrack(static_cast<AudioTrackInterface*>(NULL)));
-  EXPECT_FALSE(stream_->RemoveTrack(static_cast<VideoTrackInterface*>(NULL)));
+  EXPECT_FALSE(
+      stream_->RemoveTrack(static_cast<AudioTrackInterface*>(nullptr)));
+  EXPECT_FALSE(
+      stream_->RemoveTrack(static_cast<VideoTrackInterface*>(nullptr)));
 }
 
 TEST_F(MediaStreamTest, ChangeVideoTrack) {
   scoped_refptr<webrtc::VideoTrackInterface> video_track(
       stream_->GetVideoTracks()[0]);
   ChangeTrack(video_track.get());
 }
 
 TEST_F(MediaStreamTest, ChangeAudioTrack) {
   scoped_refptr<webrtc::AudioTrackInterface> audio_track(
       stream_->GetAudioTracks()[0]);
   ChangeTrack(audio_track.get());
 }
 
 }  // namespace webrtc