[Sync] Move //components/sync to the syncer namespace.

components/sync/api/data_type_error_handler.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 COMPONENTS_SYNC_API_DATA_TYPE_ERROR_HANDLER_H__
 #define COMPONENTS_SYNC_API_DATA_TYPE_ERROR_HANDLER_H__
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/location.h"
 #include "components/sync/api/sync_error.h"
 #include "components/sync/base/model_type.h"
 
 namespace syncer {
 
 class DataTypeErrorHandler {
  public:
-  typedef base::Callback<void(const syncer::SyncError&)> ErrorCallback;
+  typedef base::Callback<void(const SyncError&)> ErrorCallback;
 
   virtual ~DataTypeErrorHandler() {}
 
   // Call this to disable a datatype while it is running. This is usually
   // called for a runtime failure that is specific to a datatype.
   virtual void OnUnrecoverableError(const SyncError& error) = 0;
 
   // This will create a SyncError object. This will also upload a breakpad call
   // stack to crash server. A sync error usually means that sync has to be
   // disabled either for that type or completely.
   virtual SyncError CreateAndUploadError(
       const tracked_objects::Location& location,
       const std::string& message,
       ModelType type) = 0;
 
   // Create a copy of this error handler.
   virtual std::unique_ptr<DataTypeErrorHandler> Copy() const = 0;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_API_DATA_TYPE_ERROR_HANDLER_H__