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 {
+
+// The LoFi state which determines whether to add the LoFi header. Must stay
+// in sync with the enum in navigation_params.h.
+enum LoFiState {
+  // Request a LoFi version of the resource.
+  LOFI_ON = 0,
+  // Request a normal (non-LoFi) version of the resource.
+  LOFI_OFF,
+  // Let the browser process decide whether or not to request the LoFi version.
+  LOFI_DEFAULT,
+};
+
+// An interface for the ContentDataReductionProxyLoFiHelper which creates
+// a DataReductionProxyLoFiHelper that handles getting and setting
+// the Lo-Fi UserData on a request.
+class DataReductionProxyLoFiHelper {
+ public:
+  virtual ~DataReductionProxyLoFiHelper() {}
+
+  virtual LoFiState lofi_state(net::URLRequest* request) const = 0;
+  virtual void set_lofi_state(net::URLRequest* request,
+                              LoFiState lofi_state) = 0;
+};
+
+}  // namespace data_reduction_proxy
+
+#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_LOFI_HELPER_H_