Replace NULL with nullptr in all C++ files.

webrtc/modules/audio_coding/test/opus_test.cc

Index: webrtc/modules/audio_coding/test/opus_test.cc
diff --git a/webrtc/modules/audio_coding/test/opus_test.cc b/webrtc/modules/audio_coding/test/opus_test.cc
index 892eb37c3f6423424b153c377e57e8b1992e0f6b..551d57714519442a637daa61f5ff92639d02ca63 100644
--- a/webrtc/modules/audio_coding/test/opus_test.cc
+++ b/webrtc/modules/audio_coding/test/opus_test.cc
@@ -29,31 +29,31 @@ namespace webrtc {
 
 OpusTest::OpusTest()
     : acm_receiver_(AudioCodingModule::Create(0)),
-      channel_a2b_(NULL),
+      channel_a2b_(nullptr),
       counter_(0),
       payload_type_(255),
       rtp_timestamp_(0) {}
 
 OpusTest::~OpusTest() {
-  if (channel_a2b_ != NULL) {
+  if (channel_a2b_ != nullptr) {
     delete channel_a2b_;
-    channel_a2b_ = NULL;
+    channel_a2b_ = nullptr;
   }
-  if (opus_mono_encoder_ != NULL) {
+  if (opus_mono_encoder_ != nullptr) {
     WebRtcOpus_EncoderFree(opus_mono_encoder_);
-    opus_mono_encoder_ = NULL;
+    opus_mono_encoder_ = nullptr;
   }
-  if (opus_stereo_encoder_ != NULL) {
+  if (opus_stereo_encoder_ != nullptr) {
     WebRtcOpus_EncoderFree(opus_stereo_encoder_);
-    opus_stereo_encoder_ = NULL;
+    opus_stereo_encoder_ = nullptr;
   }
-  if (opus_mono_decoder_ != NULL) {
+  if (opus_mono_decoder_ != nullptr) {
     WebRtcOpus_DecoderFree(opus_mono_decoder_);
-    opus_mono_decoder_ = NULL;
+    opus_mono_decoder_ = nullptr;
   }
-  if (opus_stereo_decoder_ != NULL) {
+  if (opus_stereo_decoder_ != nullptr) {
     WebRtcOpus_DecoderFree(opus_stereo_decoder_);
-    opus_stereo_decoder_ = NULL;
+    opus_stereo_decoder_ = nullptr;
   }
 }
 
@@ -87,7 +87,7 @@ void OpusTest::Perform() {
   WebRtcOpus_DecoderInit(opus_mono_decoder_);
   WebRtcOpus_DecoderInit(opus_stereo_decoder_);
 
-  ASSERT_TRUE(acm_receiver_.get() != NULL);
+  ASSERT_TRUE(acm_receiver_.get() != nullptr);
   EXPECT_EQ(0, acm_receiver_->InitializeReceiver());
 
   // Register Opus stereo as receiving codec.
@@ -326,7 +326,7 @@ void OpusTest::Run(TestPackStereo* channel, size_t channels, int bitrate,
 
         // Send data to the channel. "channel" will handle the loss simulation.
         channel->SendData(kAudioFrameSpeech, payload_type_, rtp_timestamp_,
-                          bitstream, bitstream_len_byte, NULL);
+                          bitstream, bitstream_len_byte, nullptr);
         if (first_packet) {
           first_packet = false;
           start_time_stamp = rtp_timestamp_;