Mojo: Use new message APIs to reduce copying

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 "mojo/public/cpp/bindings/lib/connector.h"
 
 #include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <utility>
@@ skipping 509 matching lines @@
 TEST_F(ConnectorTest, PauseWithQueuedMessages) {
   internal::Connector connector0(std::move(handle0_),
                                  internal::Connector::SINGLE_THREADED_SEND,
                                  base::ThreadTaskRunnerHandle::Get());
   internal::Connector connector1(std::move(handle1_),
                                  internal::Connector::SINGLE_THREADED_SEND,
                                  base::ThreadTaskRunnerHandle::Get());
 
   const char kText[] = "hello world";
 
+  // Queue up two messages.
   Message message;
   AllocMessage(kText, &message);
-
-  // Queue up two messages.
   connector0.Accept(&message);
+  AllocMessage(kText, &message);
   connector0.Accept(&message);
 
   base::RunLoop run_loop;
   // Configure the accumulator such that it pauses after the first message is
   // received.
   MessageAccumulator accumulator([&connector1, &run_loop]() {
     connector1.PauseIncomingMethodCallProcessing();
     run_loop.Quit();
   });
   connector1.set_incoming_receiver(&accumulator);
 
   run_loop.Run();
 
   // As we paused after the first message we should only have gotten one
   // message.
   ASSERT_EQ(1u, accumulator.size());
 }
 
 TEST_F(ConnectorTest, ProcessWhenNested) {
   internal::Connector connector0(std::move(handle0_),
                                  internal::Connector::SINGLE_THREADED_SEND,
                                  base::ThreadTaskRunnerHandle::Get());
   internal::Connector connector1(std::move(handle1_),
                                  internal::Connector::SINGLE_THREADED_SEND,
                                  base::ThreadTaskRunnerHandle::Get());
 
   const char kText[] = "hello world";
 
+  // Queue up two messages.
   Message message;
   AllocMessage(kText, &message);
-
-  // Queue up two messages.
   connector0.Accept(&message);
+  AllocMessage(kText, &message);
   connector0.Accept(&message);
 
   base::RunLoop run_loop;
   MessageAccumulator accumulator;
   // When the accumulator gets the first message it spins a nested message
   // loop. The loop is quit when another message is received.
   accumulator.set_closure([&accumulator, &connector1, &run_loop]() {
     base::RunLoop nested_run_loop;
     base::MessageLoop::ScopedNestableTaskAllower allow(
         base::MessageLoop::current());
     accumulator.set_closure([&nested_run_loop]() { nested_run_loop.Quit(); });
     nested_run_loop.Run();
     run_loop.Quit();
   });
   connector1.set_incoming_receiver(&accumulator);
 
   run_loop.Run();
 
   ASSERT_EQ(2u, accumulator.size());
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace mojo