Introduce (Chrome)VariationsServiceClient

components/variations/variations_service_client.h

+// Copyright 2015 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_VARIATIONS_VARIATIONS_SERVICE_CLIENT_H_
+#define COMPONENTS_VARIATIONS_VARIATIONS_SERVICE_CLIENT_H_
+
+#include <string>
+
+namespace chrome_variations {
+
+// An abstraction of operations that depend on the embedder's (e.g. Chrome)
+// environment.
+class VariationsServiceClient {
+ public:
+  virtual ~VariationsServiceClient() {}
+
+  // Returns the current application locale (e.g. "en-US").
+  virtual std::string GetApplicationLocale() = 0;
+};
+
+}  // namespace chrome_variations
+
+#endif  // COMPONENTS_VARIATIONS_VARIATIONS_SERVICE_CLIENT_H_