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

Delta	Revision Range	Bot	Test Suite	Test
309.1%	844885-844913	Android Nexus5X WebView Perf	rendering.mobile	avg_surface_fps/many_images
100.0%	845161-845191	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/hot_Regular-3G/FlipBoard_hot_3g
100.0%	845161-845191	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/hot/FlipBoard_hot
100.0%	845142-845160	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/warm/FlipBoard_warm
100.0%	845161-845204	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/warm/FlipKart_warm
100.0%	845161-845253	Android Nexus5X WebView Perf	rendering.mobile	thread_total_rendering_cpu_time_per_frame/css_opacity_plus_n_layers_0
100.0%	845161-845253	Android Nexus5X WebView Perf	rendering.mobile	thread_total_rendering_cpu_time_per_frame/css_opacity_plus_n_layers_75
100.0%	845161-845253	Android Nexus5X WebView Perf	rendering.mobile	thread_total_rendering_cpu_time_per_frame/css_opacity_plus_n_layers_99
100.0%	845161-845191	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/cold/DevOpera_cold
100.0%	845161-845204	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/Regular-3G/Baidu_3g

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

Delta	Revision Range	Bot	Test Suite	Test	Bug
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/cold/FlipBoard_cold	1169990
zero-to-nonzero	846514-846514	linux-perf	rendering.desktop	Graphics.Smoothness.PercentDroppedFrames.AllSequences/booking_pinch_2018	1170084
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/Regular-3G/Amazon_3g	1169990
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/Regular-3G/Wikipedia_3g	1169990
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/Regular-3G/Baidu_3g	1169990
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/Regular-3G/Twitter_3g	1169990
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	rendering.mobile	thread_total_rendering_cpu_time_per_frame/css_opacity_plus_n_layers_0	1169986
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	rendering.mobile	thread_total_rendering_cpu_time_per_frame/css_opacity_plus_n_layers_75	1169986
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	rendering.mobile	thread_total_rendering_cpu_time_per_frame/css_opacity_plus_n_layers_99	1169986
zero-to-nonzero	846215-846248	Android Nexus5X WebView Perf	loading.mobile	cpuTimeToFirstContentfulPaint/hot/DevOpera_hot	1169990