Mojo: NULL -> nullptr in mojo/public/cpp/bindings and also for the bindings generator.

mojo/public/cpp/bindings/tests/connector_unittest.cc

 // Copyright 2013 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 <stdlib.h>
 #include <string.h>
 
 #include "mojo/public/cpp/bindings/lib/connector.h"
 #include "mojo/public/cpp/bindings/lib/message_builder.h"
 #include "mojo/public/cpp/bindings/lib/message_queue.h"
@@ skipping 64 matching lines @@
   internal::Connector* connector_;
   int number_of_calls_;
 };
 
 class ConnectorTest : public testing::Test {
  public:
   ConnectorTest() {
   }
 
   virtual void SetUp() override {
-    CreateMessagePipe(NULL, &handle0_, &handle1_);
+    CreateMessagePipe(nullptr, &handle0_, &handle1_);
   }
 
   virtual void TearDown() override {}
 
   void AllocMessage(const char* text, Message* message) {
     size_t payload_size = strlen(text) + 1;  // Plus null terminator.
     internal::MessageBuilder builder(1, payload_size);
     memcpy(builder.buffer()->Allocate(payload_size), text, payload_size);
     builder.Finish(message);
   }
@@ skipping 297 matching lines @@
         std::string(kText[i]),
         std::string(reinterpret_cast<const char*>(message_received.payload())));
   }
 
   ASSERT_EQ(2, accumulator.number_of_calls());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo