[DRP] Consistently use LoFi for an entire page

components/data_reduction_proxy/core/common/data_reduction_proxy_lofi_helper.h

Index: components/data_reduction_proxy/core/common/data_reduction_proxy_lofi_helper.h
diff --git a/components/data_reduction_proxy/core/common/data_reduction_proxy_lofi_helper.h b/components/data_reduction_proxy/core/common/data_reduction_proxy_lofi_helper.h
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+++ b/components/data_reduction_proxy/core/common/data_reduction_proxy_lofi_helper.h
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+// 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_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_LOFI_HELPER_H_
+#define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_LOFI_HELPER_H_
+
+#include "base/macros.h"
+#include "net/url_request/url_request.h"
+
+namespace data_reduction_proxy {
+
+// An interface for the ContentDataReductionProxyLoFiHelper which creates
+// a DataReductionProxyLoFiHelper that handles getting if a request is in Lo-Fi
+// mode.
+class DataReductionProxyLoFiHelper {
+ public:
+  virtual ~DataReductionProxyLoFiHelper() {}
+
+  // Returns true if the Lo-Fi directive should be added to the Chrome-Proxy
+  // header for the given request.
+  virtual bool IsLoFi(const net::URLRequest* request) const = 0;
+};
+
+}  // namespace data_reduction_proxy
+
+#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_LOFI_HELPER_H_