The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d56350d44cf8c0f9d67e2f0cea342b7a610c950b

commit d56350d44cf8c0f9d67e2f0cea342b7a610c950b
Author: Julia Tuttle <juliatuttle@chromium.org>
Date: Thu Dec 07 19:11:17 2017

Reporting API: Add priority and weight fields to endpoints.

This makes it possible for origins to configure load-balancing and
failover among endpoints, instead of just round-robin.

Bug:  792979 
Change-Id: Ic5dce873ea3f86430b5451d72b4a6b2b4d2949a1
Reviewed-on: https://chromium-review.googlesource.com/797445
Commit-Queue: Julia Tuttle <juliatuttle@chromium.org>
Reviewed-by: Jesse Doherty <jwd@chromium.org>
Reviewed-by: Miriam Gershenson <mgersh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#522498}
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_browsing_data_remover_unittest.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_cache.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_cache.h
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_cache_unittest.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_client.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_client.h
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_context.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_context.h
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_delivery_agent_unittest.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_endpoint_manager.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_endpoint_manager.h
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_endpoint_manager_unittest.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_header_parser.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_header_parser_unittest.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_network_change_observer_unittest.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_test_util.cc
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/net/reporting/reporting_test_util.h
[modify] https://crrev.com/d56350d44cf8c0f9d67e2f0cea342b7a610c950b/tools/metrics/histograms/enums.xml