Adding opt out and previews type information to DRP pingback

components/data_reduction_proxy/core/common/data_reduction_proxy_page_load_timing.h

 // 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 <stdint.h>
 
 #include "base/optional.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::Optional<base::TimeDelta>& response_start,
       const base::Optional<base::TimeDelta>& load_event_start,
       const base::Optional<base::TimeDelta>& first_image_paint,
       const base::Optional<base::TimeDelta>& first_contentful_paint,
       const base::Optional<base::TimeDelta>&
           experimental_first_meaningful_paint,
       const base::Optional<base::TimeDelta>&
           parse_blocked_on_script_load_duration,
       const base::Optional<base::TimeDelta>& parse_stop,
       int64_t network_bytes,
-      int64_t original_network_bytes);
+      int64_t original_network_bytes,
+      bool app_background_occurred);
 
   DataReductionProxyPageLoadTiming(
       const DataReductionProxyPageLoadTiming& other);
 
   // 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.
@@ skipping 10 matching lines @@
   const base::Optional<base::TimeDelta> experimental_first_meaningful_paint;
   // Time that parsing was blocked by loading script.
   const base::Optional<base::TimeDelta> parse_blocked_on_script_load_duration;
   // Time when parsing completed.
   const base::Optional<base::TimeDelta> parse_stop;
   // The number of bytes served over the network, not including headers.
   const int64_t network_bytes;
   // The number of bytes that would have been served over the network if the
   // user were not using data reduction proxy, not including headers.
   const int64_t original_network_bytes;
+  // True when android app background occurred during the page load lifetime.
+  const bool app_background_occurred;
 };
 
 }  // namespace data_reduction_proxy
 
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_CORE_COMMON_DATA_REDUCTION_PROXY_PAGE_LOAD_TIMING_H