All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=906736

(For debugging:) Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?sid=e652a434210869cd49b9aebb1bee297f81fffb5851a0a376abe66a6b90669a9c


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

cros-astronaut
cros-babymega
cros-babytiger
cros-blue
cros-electro
cros-robo
cros-santa
cros-whitetip

ChromeOS CL: https://crosland.corp.google.com/log/11195.0.0..11196.0.0
Chrome CL: https://chromium.googlesource.com/chromium/src/+log/72.0.3591.0..72.0.3592.0?pretty=fuller&n=10000

Stainless link
https://stainless.corp.google.com/search?view=matrix&row=model&col=build&first_date=2018-10-23&last_date=2018-11-19&test=graphics_WebGLAquarium&build=1119%5B0-9%5D.0.0&exclude_cts=false&exclude_not_run=false&exclude_non_release=true&exclude_au=true&exclude_acts=true&exclude_retried=true&exclude_non_production=false

We don't have the graph for some board in chromeperf due to the recent lab migration and whitelist problem. (see crbug.com/905069) 
From crosbolt, samus, eve, kevin, cave are not regressed.

https://crosbolt.teams.x20web.corp.google.com/prod/crosbolt/index.html?tab=time_series&sku_filter=samus_intel_broadwell_i7_2.4g_16GB%7Crobo360_IntelR_CeleronR_CPU_N3450_1_10GHz_4GB%7Crobo_intel_appolo_n3350_4GB%7Csanta_IntelR_CeleronR_CPU_N3450_1_10GHz_4GB%7Ccave_intel_skylake_4405y_4GB%7Cbob_rk3399_4GB%7Ckevin_rk3399_4GB%7Ceve_IntelR_CoreTM_i7_7Y75_CPU_1_30GHz_16GB%7Cnocturne_IntelR_CeleronR_CPU_3965Y_1_50GHz_8GB%7Cnocturne_IntelR_CoreTM_m3_8100Y_CPU_1_10GHz_8GB&show_all=false&test=graphics_WebGLAquarium&metric=avg_fps_1000_fishes&y_min=29.319465753707018&y_max=61.321480840444565&from_version=72.11163.0.0&to_version=72.11211.0.0