Update sync API to support attachments.

sync/internal_api/public/base_node.h

 // Copyright 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 SYNC_INTERNAL_API_PUBLIC_BASE_NODE_H_
 #define SYNC_INTERNAL_API_PUBLIC_BASE_NODE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
+#include "sync/api/attachments/attachment.h"
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/protocol/sync.pb.h"
 #include "url/gurl.h"
 
 // Forward declarations of internal class types so that sync API objects
 // may have opaque pointers to these types.
 namespace base {
 class DictionaryValue;
 }
@@ skipping 168 matching lines @@
 
   // Returns the total number of nodes including and beneath this node.
   // Recursively iterates through all children.
   int GetTotalNodeCount() const;
 
   // Returns this item's position within its parent.
   // Do not call this function on items that do not support positioning
   // (ie. non-bookmarks).
   int GetPositionIndex() const;
 
+  // Returns this item's attachment ids.
+  const syncer::AttachmentIdList GetAttachmentIds() const;
+
   // These virtual accessors provide access to data members of derived classes.
   virtual const syncable::Entry* GetEntry() const = 0;
   virtual const BaseTransaction* GetTransaction() const = 0;
 
   // Returns a base::DictionaryValue serialization of this node.
   base::DictionaryValue* ToValue() const;
 
  protected:
   BaseNode();
   virtual ~BaseNode();
@@ skipping 39 matching lines @@
 
   // Same as |unencrypted_data_|, but for legacy password encryption.
   scoped_ptr<sync_pb::PasswordSpecificsData> password_data_;
 
   DISALLOW_COPY_AND_ASSIGN(BaseNode);
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_BASE_NODE_H_