Add a new CldDataSource class that can be queried at runtime.

components/translate/content/common/cld_data_source.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_TRANSLATE_CONTENT_COMMON_CLD_DATA_SOURCE_H_
+#define COMPONENTS_TRANSLATE_CONTENT_COMMON_CLD_DATA_SOURCE_H_
+
+#include <string>
+
+namespace translate {
+
+// Provides high-level functionality related to a CLD Data Source.
+class CldDataSource {
+
+ public:
+
+  // Returns the symbolic name of the data source. In the Chromium
+  // open-source tree, the following data sources exist:
+  // static       uses the static_[browser|renderer]_cld_data_provider
+  //              implementations.
+  // standalone   uses the data_file_[browser|renderer]_cld_data_provider
+  //              implementations.
+  // component    also uses the data_file_[browser|renderer]_cld_data_provider
+  //              implementations.
+  //
+  // Other implementations based upon Chromium may provide CLD differently and
+  // may have other names.
+  static std::string GetName();
+
+};
+
+}  // namespace translate
+#endif  // COMPONENTS_TRANSLATE_CONTENT_COMMON_CLD_DATA_SOURCE_H_