Use gpu::Mailbox in IPCs instead of std::string

cc/texture_mailbox.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 "base/logging.h"
 #include "cc/texture_mailbox.h"
 
 namespace cc {
 
 TextureMailbox::TextureMailbox()
     : sync_point_(0) {
 }
 
 TextureMailbox::TextureMailbox(
-    const std::string& mailbox_name,
-    const ReleaseCallback& mailbox_callback)
-    : callback_(mailbox_callback),
-      sync_point_(0) {
-  DCHECK(mailbox_name.empty() == mailbox_callback.is_null());
-  if (!mailbox_name.empty()) {
-    CHECK(mailbox_name.size() == sizeof(name_.name));
-    name_.SetName(reinterpret_cast<const int8*>(mailbox_name.data()));
-  }
-}
-
-TextureMailbox::TextureMailbox(
     const gpu::Mailbox& mailbox_name,
     const ReleaseCallback& mailbox_callback)
     : callback_(mailbox_callback),
       sync_point_(0) {
   DCHECK(mailbox_name.IsZero() == mailbox_callback.is_null());
   name_.SetName(mailbox_name.name);
 }
 
 TextureMailbox::TextureMailbox(
     const gpu::Mailbox& mailbox_name,
@@ skipping 23 matching lines @@
 void TextureMailbox::RunReleaseCallback(unsigned sync_point) const {
   if (!callback_.is_null())
     callback_.Run(sync_point);
 }
 
 void TextureMailbox::SetName(const gpu::Mailbox& other) {
   name_.SetName(other.name);
 }
 
 }  // namespace cc