Adding DRP specfic UMA for FirstContentfulPaint

components/data_reduction_proxy/core/browser/data_reduction_proxy_data.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_data.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_data.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_data.h
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+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_data.h
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+// Copyright 2016 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_DATA_H_
+#define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_DATA_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "base/supports_user_data.h"
+
+namespace net {
+class URLRequest;
+}
+
+namespace data_reduction_proxy {
+
+// DataReductionProxy related data that can be put into UserData or other
+// storage vehicles to communicate information in one object.
+class DataReductionProxyData : public base::SupportsUserData::Data {
+ public:
+  DataReductionProxyData();
+  // Whether the DataReductionProxy was used for this request or navigation.
+  bool get_used_data_reduction_proxy() { return used_data_reduction_proxy_; }
+  void set_used_data_reduction_proxy(bool used_data_reduction_proxy) {
+    used_data_reduction_proxy_ = used_data_reduction_proxy;
+  }
+  // Whether Lo-Fi was turned on for this request or navigation.
+  bool get_is_using_lofi() { return is_using_lofi_; }
+  void set_is_using_lofi(bool is_using_lofi) { is_using_lofi_ = is_using_lofi; }
+  // Returns the Data for a a given URLRequest. If |add_if_not_exist| is true
+  // and there is currently no DataReductionProxyData on URLRequest, creates
+  // one, adds it to the URLRequest's UserData, and returns a raw pointer to the
+  // new instance.
+  static DataReductionProxyData* DataForRequest(net::URLRequest* request,
+                                                bool add_if_not_exist);
+  // Create a brand new instance of DataReductionProxyData that could be used in
+  // a different thread.
+  std::unique_ptr<DataReductionProxyData> DeepCopy() const;
+
+ private:
+  // Whether the DataReductionProxy was used for this request or navigation.
+  bool used_data_reduction_proxy_;
+  // Whether Lo-Fi was turned on for this request or navigation.
+  bool is_using_lofi_;
+
+  DISALLOW_COPY_AND_ASSIGN(DataReductionProxyData);
+};
+
+}  // namespace data_reduction_proxy
+
+#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_DATA_H_