Replace NULL with nullptr or null in webrtc/base/.

webrtc/base/sharedexclusivelock_unittest.cc

 /*
  *  Copyright 2011 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 43 matching lines @@
   }
 
   void PostRead(int* value) {
     worker_thread_->Post(RTC_FROM_HERE, this, kMsgRead,
                          new TypedMessageData<int*>(value));
   }
 
  private:
   virtual void OnMessage(Message* message) {
     RTC_CHECK(rtc::Thread::Current() == worker_thread_.get());
-    RTC_CHECK(message != NULL);
+    RTC_CHECK(message != nullptr);
     RTC_CHECK(message->message_id == kMsgRead);
 
     TypedMessageData<int*>* message_data =
         static_cast<TypedMessageData<int*>*>(message->pdata);
 
     {
       SharedScope ss(shared_exclusive_lock_);
       *message_data->data() = *value_;
       done_->Set();
     }
     delete message->pdata;
-    message->pdata = NULL;
+    message->pdata = nullptr;
   }
 };
 
 class WriteTask : public SharedExclusiveTask {
  public:
   WriteTask(SharedExclusiveLock* shared_exclusive_lock, int* value, Event* done)
       : SharedExclusiveTask(shared_exclusive_lock, value, done) {
   }
 
   void PostWrite(int value) {
     worker_thread_->Post(RTC_FROM_HERE, this, kMsgWrite,
                          new TypedMessageData<int>(value));
   }
 
  private:
   virtual void OnMessage(Message* message) {
     RTC_CHECK(rtc::Thread::Current() == worker_thread_.get());
-    RTC_CHECK(message != NULL);
+    RTC_CHECK(message != nullptr);
     RTC_CHECK(message->message_id == kMsgWrite);
 
     TypedMessageData<int>* message_data =
         static_cast<TypedMessageData<int>*>(message->pdata);
 
     {
       ExclusiveScope es(shared_exclusive_lock_);
       *value_ = message_data->data();
       done_->Set();
     }
     delete message->pdata;
-    message->pdata = NULL;
+    message->pdata = nullptr;
   }
 };
 
 // Unit test for SharedExclusiveLock.
 class SharedExclusiveLockTest
     : public testing::Test {
  public:
   SharedExclusiveLockTest() : value_(0) {
   }
 
@@ skipping 71 matching lines @@
     writer.PostWrite(2);
     EXPECT_FALSE(done.Wait(kProcessTimeInMs));
     EXPECT_EQ(1, value_);
   }
 
   EXPECT_TRUE(done.Wait(kProcessTimeoutInMs));
   EXPECT_EQ(2, value_);
 }
 
 }  // namespace rtc