Replace NULL with nullptr in all C++ files.

webrtc/pc/peerconnectionfactory_unittest.cc

Index: webrtc/pc/peerconnectionfactory_unittest.cc
diff --git a/webrtc/pc/peerconnectionfactory_unittest.cc b/webrtc/pc/peerconnectionfactory_unittest.cc
index 3fa523e3e710b22932c6c928cb77e5ce2487ac9a..aaed0bdeb6bf48618e4aa24b33a15cfeca021fc3 100644
--- a/webrtc/pc/peerconnectionfactory_unittest.cc
+++ b/webrtc/pc/peerconnectionfactory_unittest.cc
@@ -98,7 +98,7 @@ class PeerConnectionFactoryTest : public testing::Test {
         rtc::Thread::Current(), rtc::Thread::Current(), rtc::Thread::Current(),
         nullptr, nullptr, nullptr);
 
-    ASSERT_TRUE(factory_.get() != NULL);
+    ASSERT_TRUE(factory_.get() != nullptr);
     port_allocator_.reset(
         new cricket::FakePortAllocator(rtc::Thread::Current(), nullptr));
     raw_port_allocator_ = port_allocator_.get();
@@ -173,7 +173,7 @@ TEST_F(PeerConnectionFactoryTest, CreatePCUsingIceServers) {
   rtc::scoped_refptr<PeerConnectionInterface> pc(factory_->CreatePeerConnection(
       config, nullptr, std::move(port_allocator_), std::move(cert_generator),
       &observer_));
-  ASSERT_TRUE(pc.get() != NULL);
+  ASSERT_TRUE(pc.get() != nullptr);
   cricket::ServerAddresses stun_servers;
   rtc::SocketAddress stun1("stun.l.google.com", 19302);
   stun_servers.insert(stun1);
@@ -203,7 +203,7 @@ TEST_F(PeerConnectionFactoryTest, CreatePCUsingIceServersUrls) {
   rtc::scoped_refptr<PeerConnectionInterface> pc(factory_->CreatePeerConnection(
       config, nullptr, std::move(port_allocator_), std::move(cert_generator),
       &observer_));
-  ASSERT_TRUE(pc.get() != NULL);
+  ASSERT_TRUE(pc.get() != nullptr);
   cricket::ServerAddresses stun_servers;
   rtc::SocketAddress stun1("stun.l.google.com", 19302);
   stun_servers.insert(stun1);
@@ -232,7 +232,7 @@ TEST_F(PeerConnectionFactoryTest, CreatePCUsingNoUsernameInUri) {
   rtc::scoped_refptr<PeerConnectionInterface> pc(factory_->CreatePeerConnection(
       config, nullptr, std::move(port_allocator_), std::move(cert_generator),
       &observer_));
-  ASSERT_TRUE(pc.get() != NULL);
+  ASSERT_TRUE(pc.get() != nullptr);
   std::vector<cricket::RelayServerConfig> turn_servers;
   cricket::RelayServerConfig turn("test.com", 1234, kTurnUsername,
                                   kTurnPassword, cricket::PROTO_UDP);
@@ -253,7 +253,7 @@ TEST_F(PeerConnectionFactoryTest, CreatePCUsingTurnUrlWithTransportParam) {
   rtc::scoped_refptr<PeerConnectionInterface> pc(factory_->CreatePeerConnection(
       config, nullptr, std::move(port_allocator_), std::move(cert_generator),
       &observer_));
-  ASSERT_TRUE(pc.get() != NULL);
+  ASSERT_TRUE(pc.get() != nullptr);
   std::vector<cricket::RelayServerConfig> turn_servers;
   cricket::RelayServerConfig turn("hello.com", kDefaultStunPort, "test",
                                   kTurnPassword, cricket::PROTO_TCP);
@@ -278,7 +278,7 @@ TEST_F(PeerConnectionFactoryTest, CreatePCUsingSecureTurnUrl) {
   rtc::scoped_refptr<PeerConnectionInterface> pc(factory_->CreatePeerConnection(
       config, nullptr, std::move(port_allocator_), std::move(cert_generator),
       &observer_));
-  ASSERT_TRUE(pc.get() != NULL);
+  ASSERT_TRUE(pc.get() != nullptr);
   std::vector<cricket::RelayServerConfig> turn_servers;
   cricket::RelayServerConfig turn1("hello.com", kDefaultStunTlsPort, "test",
                                    kTurnPassword, cricket::PROTO_TLS);
@@ -313,7 +313,7 @@ TEST_F(PeerConnectionFactoryTest, CreatePCUsingIPLiteralAddress) {
   rtc::scoped_refptr<PeerConnectionInterface> pc(factory_->CreatePeerConnection(
       config, nullptr, std::move(port_allocator_), std::move(cert_generator),
       &observer_));
-  ASSERT_TRUE(pc.get() != NULL);
+  ASSERT_TRUE(pc.get() != nullptr);
   cricket::ServerAddresses stun_servers;
   rtc::SocketAddress stun1("1.2.3.4", 1234);
   stun_servers.insert(stun1);
@@ -338,11 +338,11 @@ TEST_F(PeerConnectionFactoryTest, LocalRendering) {
   cricket::FakeVideoCapturer* capturer = new cricket::FakeVideoCapturer();
   // The source take ownership of |capturer|.
   rtc::scoped_refptr<VideoTrackSourceInterface> source(
-      factory_->CreateVideoSource(capturer, NULL));
-  ASSERT_TRUE(source.get() != NULL);
+      factory_->CreateVideoSource(capturer, nullptr));
+  ASSERT_TRUE(source.get() != nullptr);
   rtc::scoped_refptr<VideoTrackInterface> track(
       factory_->CreateVideoTrack("testlabel", source));
-  ASSERT_TRUE(track.get() != NULL);
+  ASSERT_TRUE(track.get() != nullptr);
   FakeVideoTrackRenderer local_renderer(track);
 
   EXPECT_EQ(0, local_renderer.num_rendered_frames());