Start of hardware overlay support in CC with Ubercompositor.

cc/resources/texture_mailbox.h

 // 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.
 
 #ifndef CC_RESOURCES_TEXTURE_MAILBOX_H_
 #define CC_RESOURCES_TEXTURE_MAILBOX_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 22 matching lines @@
   bool Equals(const TextureMailbox&) const;
 
   const gpu::Mailbox& mailbox() const { return mailbox_holder_.mailbox; }
   const int8* name() const { return mailbox().name; }
   uint32 target() const { return mailbox_holder_.texture_target; }
   uint32 sync_point() const { return mailbox_holder_.sync_point; }
   void set_sync_point(int32 sync_point) {
     mailbox_holder_.sync_point = sync_point;
   }
 
+  bool allow_overlay() const { return allow_overlay_; }
+  void set_allow_overlay(bool allow_overlay) { allow_overlay_ = allow_overlay; }
+
   base::SharedMemory* shared_memory() const { return shared_memory_; }
   gfx::Size shared_memory_size() const { return shared_memory_size_; }
   size_t shared_memory_size_in_bytes() const;
 
  private:
   gpu::MailboxHolder mailbox_holder_;
   base::SharedMemory* shared_memory_;
   gfx::Size shared_memory_size_;
+  bool allow_overlay_;
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TEXTURE_MAILBOX_H_