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

mojo/public/cpp/bindings/tests/handle_passing_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 "mojo/public/cpp/environment/environment.h"
 #include "mojo/public/cpp/test_support/test_utils.h"
 #include "mojo/public/cpp/utility/run_loop.h"
 #include "mojo/public/interfaces/bindings/tests/sample_factory.mojom.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 51 matching lines @@
     std::string text2;
     if (request->pipe.is_valid()) {
       EXPECT_TRUE(ReadTextMessage(request->pipe.get(), &text2));
 
       // Ensure that simply accessing request->pipe does not close it.
       EXPECT_TRUE(request->pipe.is_valid());
     }
 
     ScopedMessagePipeHandle pipe0;
     if (!text2.empty()) {
-      CreateMessagePipe(NULL, &pipe0, &pipe1_);
+      CreateMessagePipe(nullptr, &pipe0, &pipe1_);
       EXPECT_TRUE(WriteTextMessage(pipe1_.get(), text2));
     }
 
     sample::ResponsePtr response(sample::Response::New());
     response->x = 2;
     response->pipe = pipe0.Pass();
     client()->DidStuff(response.Pass(), text1);
 
     if (request->obj)
       request->obj->DoSomething();
   }
 
   virtual void DoStuff2(ScopedDataPipeConsumerHandle pipe) override {
     // Read the data from the pipe, writing the response (as a string) to
     // DidStuff2().
     ASSERT_TRUE(pipe.is_valid());
     uint32_t data_size = 0;
     ASSERT_EQ(MOJO_RESULT_OK,
-              ReadDataRaw(pipe.get(), NULL, &data_size,
+              ReadDataRaw(pipe.get(), nullptr, &data_size,
                           MOJO_READ_DATA_FLAG_QUERY));
     ASSERT_NE(0, static_cast<int>(data_size));
     char data[64];
     ASSERT_LT(static_cast<int>(data_size), 64);
     ASSERT_EQ(MOJO_RESULT_OK,
               ReadDataRaw(pipe.get(), data, &data_size,
                           MOJO_READ_DATA_FLAG_ALL_OR_NONE));
 
     client()->DidStuff2(data);
   }
@@ skipping 239 matching lines @@
 
   PumpMessages();  // Yield for results.
 
   EXPECT_EQ(std::string("object1"), name1);
   EXPECT_EQ(std::string("object2"), name2);
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo