Replace NULL with nullptr in all C++ files.

webrtc/modules/audio_coding/test/TestStereo.cc

Index: webrtc/modules/audio_coding/test/TestStereo.cc
diff --git a/webrtc/modules/audio_coding/test/TestStereo.cc b/webrtc/modules/audio_coding/test/TestStereo.cc
index f18166b7dd83502a807fa5c41343620c007a4ddc..646ea94d6d9ae25652ddb0b747995d0e72a1b6e1 100644
--- a/webrtc/modules/audio_coding/test/TestStereo.cc
+++ b/webrtc/modules/audio_coding/test/TestStereo.cc
@@ -27,15 +27,14 @@ namespace webrtc {
 
 // Class for simulating packet handling
 TestPackStereo::TestPackStereo()
-    : receiver_acm_(NULL),
+    : receiver_acm_(nullptr),
       seq_no_(0),
       timestamp_diff_(0),
       last_in_timestamp_(0),
       total_bytes_(0),
       payload_size_(0),
       codec_mode_(kNotSet),
-      lost_packet_(false) {
-}
+      lost_packet_(false) {}
 
 TestPackStereo::~TestPackStereo() {
 }
@@ -111,33 +110,37 @@ void TestPackStereo::set_lost_packet(bool lost) {
 TestStereo::TestStereo(int test_mode)
     : acm_a_(AudioCodingModule::Create(0)),
       acm_b_(AudioCodingModule::Create(1)),
-      channel_a2b_(NULL),
+      channel_a2b_(nullptr),
       test_cntr_(0),
       pack_size_samp_(0),
       pack_size_bytes_(0),
       counter_(0)
 #ifdef WEBRTC_CODEC_G722
-      , g722_pltype_(0)
+      ,
+      g722_pltype_(0)
 #endif
-      , l16_8khz_pltype_(-1)
-      , l16_16khz_pltype_(-1)
-      , l16_32khz_pltype_(-1)
+      ,
+      l16_8khz_pltype_(-1),
+      l16_16khz_pltype_(-1),
+      l16_32khz_pltype_(-1)
 #ifdef PCMA_AND_PCMU
-      , pcma_pltype_(-1)
-      , pcmu_pltype_(-1)
+      ,
+      pcma_pltype_(-1),
+      pcmu_pltype_(-1)
 #endif
 #ifdef WEBRTC_CODEC_OPUS
-      , opus_pltype_(-1)
+      ,
+      opus_pltype_(-1)
 #endif
-      {
+{
   // test_mode = 0 for silent test (auto test)
   test_mode_ = test_mode;
 }
 
 TestStereo::~TestStereo() {
-  if (channel_a2b_ != NULL) {
+  if (channel_a2b_ != nullptr) {
     delete channel_a2b_;
-    channel_a2b_ = NULL;
+    channel_a2b_ = nullptr;
   }
 }
 
@@ -163,7 +166,7 @@ void TestStereo::Perform() {
   in_file_mono_->ReadStereo(false);
 
   // Create and initialize two ACMs, one for each side of a one-to-one call.
-  ASSERT_TRUE((acm_a_.get() != NULL) && (acm_b_.get() != NULL));
+  ASSERT_TRUE((acm_a_.get() != nullptr) && (acm_b_.get() != nullptr));
   EXPECT_EQ(0, acm_a_->InitializeReceiver());
   EXPECT_EQ(0, acm_b_->InitializeReceiver());
 
@@ -707,7 +710,7 @@ void TestStereo::RegisterSendCodec(char side, char* codec_name,
                                 0.875);
 
   // Set pointer to the ACM where to register the codec
-  AudioCodingModule* my_acm = NULL;
+  AudioCodingModule* my_acm = nullptr;
   switch (side) {
     case 'A': {
       my_acm = acm_a_.get();
@@ -720,7 +723,7 @@ void TestStereo::RegisterSendCodec(char side, char* codec_name,
     default:
       break;
   }
-  ASSERT_TRUE(my_acm != NULL);
+  ASSERT_TRUE(my_acm != nullptr);
 
   CodecInst my_codec_param;
   // Get all codec parameters before registering