All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=712260

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyogELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InRDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GJqrHAw,agxzfmNocm9tZXBlcmZykwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImVDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GJqrHAw,agxzfmNocm9tZXBlcmZymgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImxDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBiaqxwM,agxzfmNocm9tZXBlcmZynQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Im9DaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LW52aWRpYS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS9zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBiRqxwM,agxzfmNocm9tZXBlcmZypAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InZDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LW52aWRpYS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQYkascDA,agxzfmNocm9tZXBlcmZyrAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In5DaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LW52aWRpYS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY19zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBiRqxwM,agxzfmNocm9tZXBlcmZypgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InhDaHJvbWl1bVBlcmYvYW5kcm9pZC13ZWJ2aWV3LW5leHVzNi9tZWRpYS5hbmRyb2lkLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBiMqxwM,agxzfmNocm9tZXBlcmZyowELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InVDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LWludGVsL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBiJqxwM,agxzfmNocm9tZXBlcmZyqwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In1DaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LWludGVsL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GImrHAw,agxzfmNocm9tZXBlcmZynAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Im5DaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LWludGVsL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GImrHAw,agxzfmNocm9tZXBlcmZyngELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InBDaHJvbWl1bVBlcmYvYW5kcm9pZC1uZXh1czUvbWVkaWEuYW5kcm9pZC50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQYiKscDA,agxzfmNocm9tZXBlcmZypwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InlDaHJvbWl1bVBlcmYvYW5kcm9pZC13ZWJ2aWV3LW5leHVzNVgvbWVkaWEuYW5kcm9pZC50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQYgascDA,agxzfmNocm9tZXBlcmZyjQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Il9DaHJvbWl1bVBlcmYvd2luLWhpZ2gtZHBpL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GP-qHAw,agxzfmNocm9tZXBlcmZynAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Im5DaHJvbWl1bVBlcmYvd2luLWhpZ2gtZHBpL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GP-qHAw,agxzfmNocm9tZXBlcmZylAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImZDaHJvbWl1bVBlcmYvd2luLWhpZ2gtZHBpL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBj_qhwM,agxzfmNocm9tZXBlcmZylwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImlDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExLXByby9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS9zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBj6qhwM,agxzfmNocm9tZXBlcmZypgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InhDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExLXByby9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY19zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBj6qhwM,agxzfmNocm9tZXBlcmZyngELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InBDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExLXByby9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQY-qocDA,agxzfmNocm9tZXBlcmZymgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImxDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzEyL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBj4qhwM,agxzfmNocm9tZXBlcmZyogELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InRDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzEyL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GPiqHAw,agxzfmNocm9tZXBlcmZykwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImVDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzEyL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GPiqHAw,agxzfmNocm9tZXBlcmZynQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Im9DaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY19zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBj2qhwM,agxzfmNocm9tZXBlcmZyjgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImBDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS9zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBj2qhwM,agxzfmNocm9tZXBlcmZylQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImdDaHJvbWl1bVBlcmYvbGludXgtcmVsZWFzZS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQY9qocDA,agxzfmNocm9tZXBlcmZyoAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InJDaHJvbWl1bVBlcmYvYW5kcm9pZC1uZXh1czd2Mi9tZWRpYS5hbmRyb2lkLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBjlqhwM,agxzfmNocm9tZXBlcmZyogELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InRDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjEwL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GOOqHAw,agxzfmNocm9tZXBlcmZymgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImxDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjEwL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBjjqhwM,agxzfmNocm9tZXBlcmZykwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImVDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjEwL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GOOqHAw,agxzfmNocm9tZXBlcmZynwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InFDaHJvbWl1bVBlcmYvYW5kcm9pZC1uZXh1czVYL21lZGlhLmFuZHJvaWQudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvdmlkZW8uaHRtbD9zcmNfdHVsaXAyLm1wNF9jYW52YXNfdHJ1ZQwLEg1TdG9wcGFnZUFsZXJ0GOOqHAw,agxzfmNocm9tZXBlcmZypgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InhDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZHVhbC9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY19zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjfqhwM,agxzfmNocm9tZXBlcmZyngELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InBDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZHVhbC9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQY36ocDA,agxzfmNocm9tZXBlcmZylwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImlDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZHVhbC9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS9zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjfqhwM,agxzfmNocm9tZXBlcmZyqQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50IntDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LWF0aS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY19zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjcqhwM,agxzfmNocm9tZXBlcmZymgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImxDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LWF0aS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS9zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjcqhwM,agxzfmNocm9tZXBlcmZyoQELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InNDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjctZ3B1LWF0aS9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQY3KocDA,agxzfmNocm9tZXBlcmZymwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Im1DaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjcteDY0LWR1YWwvbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvc21wdGVfMzg0MHgyMTYwXzYwZnBzX3ZwOS53ZWJtDAsSDVN0b3BwYWdlQWxlcnQY06ocDA,agxzfmNocm9tZXBlcmZyogELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InRDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjcteDY0LWR1YWwvbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvdmlkZW8uaHRtbD9zcmNfdHVsaXAyLm1wNF9jYW52YXNfdHJ1ZQwLEg1TdG9wcGFnZUFsZXJ0GNOqHAw,agxzfmNocm9tZXBlcmZyqgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InxDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjcteDY0LWR1YWwvbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvdmlkZW8uaHRtbD9zcmNfc21wdGVfMzg0MHgyMTYwXzYwZnBzX3ZwOS53ZWJtDAsSDVN0b3BwYWdlQWxlcnQY06ocDA,agxzfmNocm9tZXBlcmZyngELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InBDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExLWFpci9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQY0KocDA,agxzfmNocm9tZXBlcmZypgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InhDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExLWFpci9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY19zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjQqhwM,agxzfmNocm9tZXBlcmZylwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImlDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzExLWFpci9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS9zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjQqhwM,agxzfmNocm9tZXBlcmZypgELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InhDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjgtZHVhbC9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY19zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjMqhwM,agxzfmNocm9tZXBlcmZylwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImlDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjgtZHVhbC9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS9zbXB0ZV8zODQweDIxNjBfNjBmcHNfdnA5LndlYm0MCxINU3RvcHBhZ2VBbGVydBjMqhwM,agxzfmNocm9tZXBlcmZyngELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InBDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLXdpbjgtZHVhbC9tZWRpYS50b3VnaF92aWRlb19jYXNlcy9idWZmZXJpbmdfdGltZS92aWRlby5odG1sP3NyY190dWxpcDIubXA0X2NhbnZhc190cnVlDAsSDVN0b3BwYWdlQWxlcnQYzKocDA,agxzfmNocm9tZXBlcmZypwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InlDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYy1yZXRpbmEvbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvdmlkZW8uaHRtbD9zcmNfc21wdGVfMzg0MHgyMTYwXzYwZnBzX3ZwOS53ZWJtDAsSDVN0b3BwYWdlQWxlcnQYuKocDA,agxzfmNocm9tZXBlcmZymAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImpDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYy1yZXRpbmEvbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvc21wdGVfMzg0MHgyMTYwXzYwZnBzX3ZwOS53ZWJtDAsSDVN0b3BwYWdlQWxlcnQYuKocDA,agxzfmNocm9tZXBlcmZynwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InFDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYy1yZXRpbmEvbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvdmlkZW8uaHRtbD9zcmNfdHVsaXAyLm1wNF9jYW52YXNfdHJ1ZQwLEg1TdG9wcGFnZUFsZXJ0GLiqHAw,agxzfmNocm9tZXBlcmZyowELEhNTdG9wcGFnZUFsZXJ0UGFyZW50InVDaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzEyLW1pbmktOGdiL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3R1bGlwMi5tcDRfY2FudmFzX3RydWUMCxINU3RvcHBhZ2VBbGVydBi1qhwM,agxzfmNocm9tZXBlcmZyqwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50In1DaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzEyLW1pbmktOGdiL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3ZpZGVvLmh0bWw_c3JjX3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GLWqHAw,agxzfmNocm9tZXBlcmZynAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Im5DaHJvbWl1bVBlcmYvY2hyb21pdW0tcmVsLW1hYzEyLW1pbmktOGdiL21lZGlhLnRvdWdoX3ZpZGVvX2Nhc2VzL2J1ZmZlcmluZ190aW1lL3NtcHRlXzM4NDB4MjE2MF82MGZwc192cDkud2VibQwLEg1TdG9wcGFnZUFsZXJ0GLWqHAw,agxzfmNocm9tZXBlcmZymwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Im1DaHJvbWl1bVBlcmYvd2luLXplbmJvb2svbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvdmlkZW8uaHRtbD9zcmNfc21wdGVfMzg0MHgyMTYwXzYwZnBzX3ZwOS53ZWJtDAsSDVN0b3BwYWdlQWxlcnQYoaocDA,agxzfmNocm9tZXBlcmZykwELEhNTdG9wcGFnZUFsZXJ0UGFyZW50ImVDaHJvbWl1bVBlcmYvd2luLXplbmJvb2svbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvdmlkZW8uaHRtbD9zcmNfdHVsaXAyLm1wNF9jYW52YXNfdHJ1ZQwLEg1TdG9wcGFnZUFsZXJ0GKGqHAw,agxzfmNocm9tZXBlcmZyjAELEhNTdG9wcGFnZUFsZXJ0UGFyZW50Il5DaHJvbWl1bVBlcmYvd2luLXplbmJvb2svbWVkaWEudG91Z2hfdmlkZW9fY2FzZXMvYnVmZmVyaW5nX3RpbWUvc21wdGVfMzg0MHgyMTYwXzYwZnBzX3ZwOS53ZWJtDAsSDVN0b3BwYWdlQWxlcnQYoaocDA


Bot(s) for this bug's original alert(s):

android-nexus5
android-nexus5X
android-nexus7v2
android-webview-nexus5X
android-webview-nexus6
chromium-rel-mac-retina
chromium-rel-mac11
chromium-rel-mac11-air
chromium-rel-mac11-pro
chromium-rel-mac12
chromium-rel-mac12-mini-8gb
chromium-rel-win10
chromium-rel-win7-dual
chromium-rel-win7-gpu-ati
chromium-rel-win7-gpu-intel
chromium-rel-win7-gpu-nvidia
chromium-rel-win7-x64-dual
chromium-rel-win8-dual
linux-release
win-high-dpi
win-zenbook

The buffering_time metric is no longer reported for smpte_3840x2160_60fps_vp9.webm and tulip2.mp4&canvas=true due to https://codereview.chromium.org/2813383002, which modified the seek operations on these two pages, so that the video is no longer played from beginning to end. The buffering_time metric can't be calculated in such case. These two pages are the only ones in media.tough_video_cases and media.android.tough_video_cases that do seek (i.e., calling SeekBeforeAndAfterPlayhead).