Sending a data saver Pageload metrics pingback

components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.h

Index: components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.h
diff --git a/components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.h b/components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.h
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+++ b/components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.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_COMMON_DATA_REDUCTION_PROXY_PAGE_LOAD_TIMING_H
+#define COMPONENTS_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_REDUCTION_PROXY_PAGE_LOAD_TIMING_H
+
+#include "base/time/time.h"
+
+namespace data_reduction_proxy {
+
+// The timing information that is relevant to the Pageload metrics pingback.
+struct DataReductionProxyPageLoadTiming {
+  DataReductionProxyPageLoadTiming(
+      const base::Time& navigation_start,
+      const base::TimeDelta& response_start,
+      const base::TimeDelta& load_event_start,
+      const base::TimeDelta& first_image_paint,
+      const base::TimeDelta& first_contentful_paint)
+      : navigation_start(navigation_start),
+        response_start(response_start),
+        load_event_start(load_event_start),
+        first_image_paint(first_image_paint),
+        first_contentful_paint(first_contentful_paint) {}
+
+  // Time that the navigation for the associated page was initiated.
+  const base::Time navigation_start;
+
+  // All TimeDeltas are relative to navigation_start
+
+  // Time that the first byte of the response is received.
+  const base::TimeDelta response_start;
+
+  // Time immediately before the load event is fired.
+  const base::TimeDelta load_event_start;
+
+  // Time when the first image is painted.
+  const base::TimeDelta first_image_paint;
+  // Time when the first contentful thing (image, text, etc.) is painted.
+  const base::TimeDelta first_contentful_paint;
+};
+
+}  // namespace data_reduction_proxy
+
+#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_REDUCTION_PROXY_PAGE_LOAD_TIMING_H