Switch to standard integer types in gpu/.

gpu/command_buffer/service/mailbox_manager_sync.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 "gpu/command_buffer/service/mailbox_manager_sync.h"
 
+#include <stddef.h>
+
 #include <algorithm>
 #include <queue>
 
 #include "base/memory/linked_ptr.h"
 #include "base/synchronization/lock.h"
 #include "gpu/command_buffer/common/sync_token.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "ui/gl/gl_fence.h"
 #include "ui/gl/gl_implementation.h"
 
@@ skipping 312 matching lines @@
 
   if (!needs_update.empty()) {
     for (const TextureUpdatePair& pair : needs_update) {
       pair.second.UpdateTexture(pair.first);
     }
   }
 }
 
 }  // namespace gles2
 }  // namespace gpu