[DRP] Consistently use LoFi for an entire page

components/data_reduction_proxy/content/browser/content_lofi_decider.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_DATA_REDUCTION_PROXY_CONTENT_BROWSER_CONTENT_LOFI_DECIDER_H_
+#define COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_BROWSER_CONTENT_LOFI_DECIDER_H_
+
+#include "components/data_reduction_proxy/core/common/lofi_decider.h"
+#include "base/macros.h"
+
+namespace net {
+class URLRequest;
+}
+
+namespace data_reduction_proxy {
+
+// Class responsible for deciding whether a request should be requested with low
+// fidelity (Lo-Fi) or not. Relies on the Lo-Fi mode state stored in the
+// request's content::ResourceRequestInfo, which must be fetched using
+// content::ResourceRequestInfo::ForRequest. Owned by DataReductionProxyIOData
+// and should be called on the IO thread.
+class ContentLoFiDecider : public LoFiDecider {
+ public:
+  ContentLoFiDecider();
+  ~ContentLoFiDecider() override;
+
+  bool IsUsingLoFiMode(const net::URLRequest& request) const override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ContentLoFiDecider);
+};
+
+}  // namespace data_reduction_proxy
+
+#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_BROWSER_CONTENT_LOFI_DECIDER_H_