Replace NULL with nullptr in all C++ files.

webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc

Index: webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
diff --git a/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc b/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
index a47c209ad42945bbe4de5cd7b110aabbf3b85e1c..85b697df5a2bdaf538cff7eae03f5307e3ca82ba 100644
--- a/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
+++ b/webrtc/modules/video_coding/codecs/vp8/test/vp8_impl_unittest.cc
@@ -130,7 +130,7 @@ class TestVp8Impl : public ::testing::Test {
     decoder_.reset(VP8Decoder::Create());
     memset(&codec_inst_, 0, sizeof(codec_inst_));
     encode_complete_callback_.reset(
-        new Vp8UnitTestEncodeCompleteCallback(&encoded_frame_, 0, NULL));
+        new Vp8UnitTestEncodeCompleteCallback(&encoded_frame_, 0, nullptr));
     decode_complete_callback_.reset(
         new Vp8UnitTestDecodeCompleteCallback(&decoded_frame_));
     encoder_->RegisterEncodeCompleteCallback(encode_complete_callback_.get());
@@ -138,7 +138,7 @@ class TestVp8Impl : public ::testing::Test {
     // Using a QCIF image (aligned stride (u,v planes) > width).
     // Processing only one frame.
     source_file_ = fopen(test::ResourcePath("paris_qcif", "yuv").c_str(), "rb");
-    ASSERT_TRUE(source_file_ != NULL);
+    ASSERT_TRUE(source_file_ != nullptr);
     rtc::scoped_refptr<VideoFrameBuffer> compact_buffer(
         test::ReadI420Buffer(kWidth, kHeight, source_file_));
     ASSERT_TRUE(compact_buffer);
@@ -251,13 +251,13 @@ TEST_F(TestVp8Impl, EncoderParameterTest) {
 #endif
 TEST_F(TestVp8Impl, MAYBE_AlignedStrideEncodeDecode) {
   SetUpEncodeDecode();
-  encoder_->Encode(*input_frame_, NULL, NULL);
+  encoder_->Encode(*input_frame_, nullptr, nullptr);
   EXPECT_GT(WaitForEncodedFrame(), 0u);
   // First frame should be a key frame.
   encoded_frame_._frameType = kVideoFrameKey;
   encoded_frame_.ntp_time_ms_ = kTestNtpTimeMs;
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
-            decoder_->Decode(encoded_frame_, false, NULL));
+            decoder_->Decode(encoded_frame_, false, nullptr));
   EXPECT_GT(WaitForDecodedFrame(), 0u);
   ASSERT_TRUE(decoded_frame_);
   // Compute PSNR on all planes (faster than SSIM).
@@ -273,21 +273,21 @@ TEST_F(TestVp8Impl, MAYBE_AlignedStrideEncodeDecode) {
 #endif
 TEST_F(TestVp8Impl, MAYBE_DecodeWithACompleteKeyFrame) {
   SetUpEncodeDecode();
-  encoder_->Encode(*input_frame_, NULL, NULL);
+  encoder_->Encode(*input_frame_, nullptr, nullptr);
   EXPECT_GT(WaitForEncodedFrame(), 0u);
   // Setting complete to false -> should return an error.
   encoded_frame_._completeFrame = false;
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_ERROR,
-            decoder_->Decode(encoded_frame_, false, NULL));
+            decoder_->Decode(encoded_frame_, false, nullptr));
   // Setting complete back to true. Forcing a delta frame.
   encoded_frame_._frameType = kVideoFrameDelta;
   encoded_frame_._completeFrame = true;
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_ERROR,
-            decoder_->Decode(encoded_frame_, false, NULL));
+            decoder_->Decode(encoded_frame_, false, nullptr));
   // Now setting a key frame.
   encoded_frame_._frameType = kVideoFrameKey;
   EXPECT_EQ(WEBRTC_VIDEO_CODEC_OK,
-            decoder_->Decode(encoded_frame_, false, NULL));
+            decoder_->Decode(encoded_frame_, false, nullptr));
   ASSERT_TRUE(decoded_frame_);
   EXPECT_GT(I420PSNR(input_frame_.get(), &*decoded_frame_), 36);
 }