Add base namespace to more values in sync and elsewhere.

sync/protocol/sync_protocol_error.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_PROTOCOL_SYNC_PROTOCOL_ERROR_H_
 #define SYNC_PROTOCOL_SYNC_PROTOCOL_ERROR_H_
 
 #include <string>
 
 #include "base/values.h"
 #include "sync/base/sync_export.h"
@@ skipping 60 matching lines @@
 };
 
 struct SYNC_EXPORT SyncProtocolError {
   SyncProtocolErrorType error_type;
   std::string error_description;
   std::string url;
   ClientAction action;
   ModelTypeSet error_data_types;
   SyncProtocolError();
   ~SyncProtocolError();
-  DictionaryValue* ToValue() const;
+  base::DictionaryValue* ToValue() const;
 };
 
 SYNC_EXPORT const char* GetSyncErrorTypeString(SyncProtocolErrorType type);
 SYNC_EXPORT const char* GetClientActionString(ClientAction action);
 }  // namespace syncer
 #endif  // SYNC_PROTOCOL_SYNC_PROTOCOL_ERROR_H_