Adding a DataSaverStatus interface to DataReductionProxy

components/data_reduction_proxy/core/common/data_saver_status.h

Index: components/data_reduction_proxy/core/common/data_saver_status.h
diff --git a/components/data_reduction_proxy/core/common/data_saver_status.h b/components/data_reduction_proxy/core/common/data_saver_status.h
new file mode 100644
index 0000000000000000000000000000000000000000..0f752057dfcd59524ed27daab49776320d3fb457
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+++ b/components/data_reduction_proxy/core/common/data_saver_status.h
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+// 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_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_SAVER_STATUS_H_
+#define COMPONENTS_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_SAVER_STATUS_H_
+
+namespace data_reduction_proxy {
+
+// A class that reports the current state of data saver.
+class DataSaverStatus {
+ public:
+  // Whether data saver is currently enabled.
+  virtual bool IsDataSaverEnabled() const = 0;
+};
+
+}  // namespace data_reduction_proxy
+
+#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_SAVER_STATUS_H_