Move non-API code out of sync/api/attachments/

sync/internal_api/public/attachments/attachment_service_proxy.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 SYNC_API_ATTACHMENTS_ATTACHMENT_SERVICE_PROXY_H_
-#define SYNC_API_ATTACHMENTS_ATTACHMENT_SERVICE_PROXY_H_
+#ifndef SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_SERVICE_PROXY_H_
+#define SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_SERVICE_PROXY_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/sequenced_task_runner.h"
 #include "base/task_runner.h"
 #include "sync/api/attachments/attachment.h"
-#include "sync/api/attachments/attachment_service.h"
 #include "sync/base/sync_export.h"
+#include "sync/internal_api/public/attachments/attachment_service.h"
 
 namespace syncer {
 
-class SyncData;
-
 // AttachmentServiceProxy wraps an AttachmentService allowing multiple threads
 // to share the wrapped AttachmentService and invoke its methods in the
 // appropriate thread.
 //
 // Callbacks passed to methods on this class will be invoked in the same thread
 // from which the method was called.
 //
 // This class does not own its wrapped AttachmentService object.  This class
 // holds a WeakPtr to the wrapped object.  Once the the wrapped object is
 // destroyed, method calls on this object will be no-ops.
@@ skipping 73 matching lines @@
       const scoped_refptr<base::SequencedTaskRunner>& wrapped_task_runner,
       const scoped_refptr<Core>& core);
 
  private:
   scoped_refptr<base::SequencedTaskRunner> wrapped_task_runner_;
   scoped_refptr<Core> core_;
 };
 
 }  // namespace syncer
 
-#endif  // SYNC_API_ATTACHMENTS_ATTACHMENT_SERVICE_PROXY_H_
+#endif  // SYNC_INTERNAL_API_PUBLIC_ATTACHMENTS_ATTACHMENT_SERVICE_PROXY_H_