Replace NULL with nullptr in all C++ files.

webrtc/modules/rtp_rtcp/source/rtp_format_vp8_unittest.cc

Index: webrtc/modules/rtp_rtcp/source/rtp_format_vp8_unittest.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_format_vp8_unittest.cc b/webrtc/modules/rtp_rtcp/source/rtp_format_vp8_unittest.cc
index 0e1a474e35a47b8af7988b77214651b6090546ee..0b8876b62c712d4cae13d6f2383cdcda2b8a5209 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_format_vp8_unittest.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_format_vp8_unittest.cc
@@ -60,7 +60,7 @@ constexpr RtpPacketToSend::ExtensionManager* kNoExtensions = nullptr;
 //      :               :
 //      +-+-+-+-+-+-+-+-+
 void VerifyBasicHeader(RTPTypeHeader* type, bool N, bool S, int part_id) {
-  ASSERT_TRUE(type != NULL);
+  ASSERT_TRUE(type != nullptr);
   EXPECT_EQ(N, type->Video.codecHeader.VP8.nonReference);
   EXPECT_EQ(S, type->Video.codecHeader.VP8.beginningOfPartition);
   EXPECT_EQ(part_id, type->Video.codecHeader.VP8.partitionId);
@@ -71,7 +71,7 @@ void VerifyExtensions(RTPTypeHeader* type,
                       int16_t tl0_pic_idx,  /* L */
                       uint8_t temporal_idx, /* T */
                       int key_idx /* K */) {
-  ASSERT_TRUE(type != NULL);
+  ASSERT_TRUE(type != nullptr);
   EXPECT_EQ(picture_id, type->Video.codecHeader.VP8.pictureId);
   EXPECT_EQ(tl0_pic_idx, type->Video.codecHeader.VP8.tl0PicIdx);
   EXPECT_EQ(temporal_idx, type->Video.codecHeader.VP8.temporalIdx);
@@ -81,7 +81,7 @@ void VerifyExtensions(RTPTypeHeader* type,
 
 class RtpPacketizerVp8Test : public ::testing::Test {
  protected:
-  RtpPacketizerVp8Test() : helper_(NULL) {}
+  RtpPacketizerVp8Test() : helper_(nullptr) {}
   virtual void TearDown() { delete helper_; }
   bool Init(const size_t* partition_sizes, size_t num_partitions) {
     hdr_info_.pictureId = kNoPictureId;
@@ -90,7 +90,7 @@ class RtpPacketizerVp8Test : public ::testing::Test {
     hdr_info_.layerSync = false;
     hdr_info_.tl0PicIdx = kNoTl0PicIdx;
     hdr_info_.keyIdx = kNoKeyIdx;
-    if (helper_ != NULL)
+    if (helper_ != nullptr)
       return false;
     helper_ = new test::RtpFormatVp8TestHelper(&hdr_info_);
     return helper_->Init(partition_sizes, num_partitions);
@@ -271,8 +271,8 @@ TEST_F(RtpPacketizerVp8Test, TestEqualSizeModeFallback) {
   hdr_info_.pictureId = 200;          // > 0x7F should produce 2-byte PictureID
   const size_t kMaxPayloadSize = 12;  // Small enough to produce 4 packets.
   RtpPacketizerVp8 packetizer(hdr_info_, kMaxPayloadSize);
-  packetizer.SetPayloadData(
-      helper_->payload_data(), helper_->payload_size(), NULL);
+  packetizer.SetPayloadData(helper_->payload_data(), helper_->payload_size(),
+                            nullptr);
 
   // Expecting three full packets, and one with the remainder.
   const size_t kExpectedSizes[] = {12, 11, 12, 11};
@@ -300,8 +300,8 @@ TEST_F(RtpPacketizerVp8Test, TestNonReferenceBit) {
   hdr_info_.nonReference = true;
   const size_t kMaxPayloadSize = 25;  // Small enough to produce two packets.
   RtpPacketizerVp8 packetizer(hdr_info_, kMaxPayloadSize);
-  packetizer.SetPayloadData(
-      helper_->payload_data(), helper_->payload_size(), NULL);
+  packetizer.SetPayloadData(helper_->payload_data(), helper_->payload_size(),
+                            nullptr);
 
   // EqualSize mode => First packet full; other not.
   const size_t kExpectedSizes[] = {16, 16};
@@ -418,7 +418,7 @@ class RtpDepacketizerVp8Test : public ::testing::Test {
   void ExpectPacket(RtpDepacketizer::ParsedPayload* parsed_payload,
                     const uint8_t* data,
                     size_t length) {
-    ASSERT_TRUE(parsed_payload != NULL);
+    ASSERT_TRUE(parsed_payload != nullptr);
     EXPECT_THAT(std::vector<uint8_t>(
                     parsed_payload->payload,
                     parsed_payload->payload + parsed_payload->payload_length),
@@ -580,7 +580,7 @@ TEST_F(RtpDepacketizerVp8Test, TestWithPacketizer) {
   input_header.tl0PicIdx = kNoTl0PicIdx;  // Disable.
   input_header.keyIdx = 31;
   RtpPacketizerVp8 packetizer(input_header, 20);
-  packetizer.SetPayloadData(data, 10, NULL);
+  packetizer.SetPayloadData(data, 10, nullptr);
   bool last;
   ASSERT_TRUE(packetizer.NextPacket(&packet, &last));
   EXPECT_TRUE(last);