Mojo: NULL -> nullptr in mojo/system and mojo/embedder.

mojo/system/shared_buffer_dispatcher.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/system/shared_buffer_dispatcher.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 162 matching lines @@
   // Checks for fields beyond |flags|:
 
   // (Nothing here yet.)
 
   return MOJO_RESULT_OK;
 }
 
 void SharedBufferDispatcher::CloseImplNoLock() {
   lock().AssertAcquired();
   DCHECK(shared_buffer_.get());
-  shared_buffer_ = NULL;
+  shared_buffer_ = nullptr;
 }
 
 scoped_refptr<Dispatcher>
 SharedBufferDispatcher::CreateEquivalentDispatcherAndCloseImplNoLock() {
   lock().AssertAcquired();
   DCHECK(shared_buffer_.get());
   scoped_refptr<embedder::PlatformSharedBuffer> shared_buffer;
   shared_buffer.swap(shared_buffer_);
   return scoped_refptr<Dispatcher>(new SharedBufferDispatcher(shared_buffer));
 }
@@ skipping 57 matching lines @@
 
   SerializedSharedBufferDispatcher* serialization =
       static_cast<SerializedSharedBufferDispatcher*>(destination);
   // If there's only one reference to |shared_buffer_|, then it's ours (and no
   // one else can make any more references to it), so we can just take its
   // handle.
   embedder::ScopedPlatformHandle platform_handle(
       shared_buffer_->HasOneRef() ? shared_buffer_->PassPlatformHandle()
                                   : shared_buffer_->DuplicatePlatformHandle());
   if (!platform_handle.is_valid()) {
-    shared_buffer_ = NULL;
+    shared_buffer_ = nullptr;
     return false;
   }
 
   serialization->num_bytes = shared_buffer_->GetNumBytes();
   serialization->platform_handle_index = platform_handles->size();
   platform_handles->push_back(platform_handle.release());
   *actual_size = sizeof(SerializedSharedBufferDispatcher);
 
-  shared_buffer_ = NULL;
+  shared_buffer_ = nullptr;
 
   return true;
 }
 
 }  // namespace system
 }  // namespace mojo