Top 10 improvements in the last 7 days for Chromium Perf Sheriff

Delta	Revision Range	Bot	Test Suite	Test
942.5%	689466-689497	Android Nexus5X WebView Perf	blink_perf.layout	flexbox-row-stretch-height-definite
898.7%	689444-689485	android-nexus5x-perf	blink_perf.layout	flexbox-row-stretch-height-definite
700.7%	689474-689636	win-10-perf	blink_perf.layout	flexbox-row-stretch-height-definite
672.9%	689392-689491	Win 7 Nvidia GPU Perf	blink_perf.layout	flexbox-row-stretch-height-definite
665.8%	689460-689519	Android Nexus5 Perf	blink_perf.layout	flexbox-row-stretch-height-definite
625.9%	689434-689658	Win 7 Perf	blink_perf.layout	flexbox-row-stretch-height-definite
597.7%	689478-689518	linux-perf	blink_perf.layout	flexbox-row-stretch-height-definite
571.0%	689449-689506	Android Nexus6 WebView Perf	blink_perf.layout	flexbox-row-stretch-height-definite
399.5%	689456-689487	mac-10_12_laptop_low_end-perf	blink_perf.layout	flexbox-row-stretch-height-definite
378.0%	689478-689498	mac-10_13_laptop_high_end-perf	blink_perf.layout	flexbox-row-stretch-height-definite

Top 10 regressions in the last 7 days for Chromium Perf Sheriff

Delta	Revision Range	Bot	Test Suite	Test	Bug
21975.0%	688549-688700	win-10-perf	rendering.desktop	thread_raster_cpu_time_per_frame/bouncing_balls_15	996968
18286.3%	688549-688700	win-10-perf	rendering.desktop	thread_raster_cpu_time_per_frame/background_color_animation_with_gradient	996968
9816.7%	688549-688700	win-10-perf	rendering.desktop	thread_raster_cpu_time_per_frame/canvas_lines	996968
8600.0%	688549-688700	win-10-perf	rendering.desktop	thread_raster_cpu_time_per_frame/bouncing_clipped_rectangles	996968
1485.2%	688549-688700	win-10-perf	rendering.desktop	queueing_durations/smash_cat	996968
1476.6%	688988-689019	linux-perf	rendering.desktop	Event.Latency.ScrollBegin.Touch.TimeToScrollUpdateSwapBegin4/techcrunch_2018	NONE
1085.3%	688549-688700	win-10-perf	rendering.desktop	thread_raster_cpu_time_per_frame/balls_css_transition_all_properties	996968
1025.0%	688549-688700	win-10-perf	rendering.desktop	thread_raster_cpu_time_per_frame/canvas_font_cycler	996968
555.3%	689389-689411	linux-perf	rendering.desktop	queueing_durations/booking.com_2018	NONE
403.8%	688549-688700	win-10-perf	rendering.desktop	thread_raster_cpu_time_per_frame/css_value_type_color	996968