Switch to standard integer types in mojo/.

mojo/package_manager/content_handler_unittest.cc

 // Copyright 2015 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 <stdint.h>
+
 #include <utility>
 
 #include "base/at_exit.h"
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "mojo/application/public/cpp/application_connection.h"
@@ skipping 299 matching lines @@
   params->SetTargetURL(GURL("test:test"));
   params->set_connect_callback(
       [&content_handler_id](uint32_t t) { content_handler_id = t; });
   application_manager_->ConnectToApplication(std::move(params));
   EXPECT_EQ(0u, content_handler_id);
 }
 
 }  // namespace test
 }  // namespace package_manager
 }  // namespace mojo