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

gpu/command_buffer/service/mailbox_manager.h

 // Copyright (c) 2012 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_H_
 
 #include <functional>
 #include <map>
 
@@ skipping 46 matching lines @@
     Mailbox mailbox;
   };
 
   static bool TargetNameLess(const TargetName& lhs, const TargetName& rhs);
 
   // This is a bidirectional map between mailbox and textures. We can have
   // multiple mailboxes per texture, but one texture per mailbox. We keep an
   // iterator in the MailboxToTextureMap to be able to manage changes to
   // the TextureToMailboxMap efficiently.
   typedef std::multimap<Texture*, TargetName> TextureToMailboxMap;
-  typedef std::map<
-      TargetName,
-      TextureToMailboxMap::iterator,
-      std::pointer_to_binary_function<
-          const TargetName&, const TargetName&, bool> > MailboxToTextureMap;
+  typedef std::map<TargetName,
+                   TextureToMailboxMap::iterator,
+                   std::pointer_to_binary_function<const TargetName&,
+                                                   const TargetName&,
+                                                   bool> > MailboxToTextureMap;
 
   MailboxToTextureMap mailbox_to_textures_;
   TextureToMailboxMap textures_to_mailboxes_;
 
   DISALLOW_COPY_AND_ASSIGN(MailboxManager);
 };
 }  // namespage gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_MAILBOX_MANAGER_H_
 
-