Introduce components/display_compositor

content/browser/compositor/owned_mailbox.h

 // 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.
 
 #ifndef CONTENT_BROWSER_COMPOSITOR_OWNED_MAILBOX_H_
 #define CONTENT_BROWSER_COMPOSITOR_OWNED_MAILBOX_H_
 
 #include <stdint.h>
 
 #include "base/memory/ref_counted.h"
 #include "content/browser/compositor/image_transport_factory.h"
 #include "content/common/content_export.h"
 #include "gpu/command_buffer/common/mailbox_holder.h"
 
+namespace display_compositor {
+class GLHelper;
+}
+
 namespace content {
 
-class GLHelper;
 
 // This class holds a texture id and gpu::Mailbox, and deletes the texture
 // id when the object itself is destroyed. Should only be created if a GLHelper
 // exists on the ImageTransportFactory.
 class CONTENT_EXPORT OwnedMailbox : public base::RefCounted<OwnedMailbox>,
                                     public ImageTransportFactoryObserver {
  public:
-  explicit OwnedMailbox(GLHelper* gl_helper);
+  explicit OwnedMailbox(display_compositor::GLHelper* gl_helper);
 
   const gpu::MailboxHolder& holder() const { return mailbox_holder_; }
   const gpu::Mailbox& mailbox() const { return mailbox_holder_.mailbox; }
   const gpu::SyncToken& sync_token() const {
     return mailbox_holder_.sync_token;
   }
   uint32_t texture_id() const { return texture_id_; }
   uint32_t target() const { return mailbox_holder_.texture_target; }
   void UpdateSyncToken(const gpu::SyncToken& sync_token);
   void Destroy();
 
  protected:
   ~OwnedMailbox() override;
 
   // ImageTransportFactoryObserver implementation.
   void OnLostResources() override;
 
  private:
   friend class base::RefCounted<OwnedMailbox>;
 
   uint32_t texture_id_;
   gpu::MailboxHolder mailbox_holder_;
-  GLHelper* gl_helper_;
+  display_compositor::GLHelper* gl_helper_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_OWNED_MAILBOX_H_