[Sync] Move DataTypeErrorHandler to //sync.

sync/internal_api/public/data_type_error_handler.h

Index: sync/internal_api/public/data_type_error_handler.h
diff --git a/sync/internal_api/public/data_type_error_handler.h b/sync/internal_api/public/data_type_error_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..b7385ca711f66f1c0984b8259915baa74e923374
--- /dev/null
+++ b/sync/internal_api/public/data_type_error_handler.h
@@ -0,0 +1,37 @@
+// 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_INTERNAL_API_PUBLIC_DATA_TYPE_ERROR_HANDLER_H__
+#define SYNC_INTERNAL_API_PUBLIC_DATA_TYPE_ERROR_HANDLER_H__
+
+#include <string>
+#include "base/location.h"
+
+#include "sync/api/sync_error.h"
+#include "sync/internal_api/public/base/model_type.h"
+#include "sync/internal_api/public/util/unrecoverable_error_handler.h"
+
+namespace syncer {
+
+class DataTypeErrorHandler {
+ public:
+  // 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 OnSingleDataTypeUnrecoverableError(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;
+
+ protected:
+  virtual ~DataTypeErrorHandler() {}
+};
+
+}  // namespace syncer
+
+#endif  // SYNC_INTERNAL_API_PUBLIC_DATA_TYPE_ERROR_HANDLER_H__