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

Delta	Revision Range	Bot	Test Suite	Test
383.3%	550929-551672	android-webview-nexus6	blink_perf.layout	fixed-grid-lots-of-stretched-data
352.7%	550929-551672	android-webview-nexus6	blink_perf.layout	fixed-grid-lots-of-data
203.7%	550929-551672	android-webview-nexus6	blink_perf.layout	auto-grid-lots-of-data
160.4%	550969-551087	chromium-rel-mac11-air	blink_perf.layout	fixed-grid-lots-of-data
155.0%	550969-551087	chromium-rel-mac11-air	blink_perf.layout	fixed-grid-lots-of-stretched-data
136.7%	551036-551100	android-webview-nexus5X	blink_perf.layout	fixed-grid-lots-of-data
132.1%	551036-551100	android-webview-nexus5X	blink_perf.layout	fixed-grid-lots-of-stretched-data
122.5%	549662-549745	linux-release	smoothness.top_25_smooth	percentage_smooth/gmail
116.0%	550929-551672	android-webview-nexus6	blink_perf.layout	nested-grid
100.0%	551432-551549	android-nexus7v2	thread_times.key_silk_cases	thread_raster_cpu_time_per_frame/inbox_app.html?toggle_drawer

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

Delta	Revision Range	Bot	Test Suite	Test	Bug
330.1%	552587-552589	chromium-rel-win7-gpu-intel	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:malloc:allocated_objects_size_avg/load_media/load_media_9gag	835853
294.7%	552588-552590	chromium-rel-mac11-pro	loading.desktop	timeToFirstContentfulPaint_avg/cold/Taobao	835861
291.5%	552546-552582	chromium-rel-win10	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/load_tools/load_tools_weather	835929
291.5%	552559-552586	chromium-rel-win7-gpu-intel	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/load_tools/load_tools_weather	835929
282.4%	552587-552589	chromium-rel-win7-gpu-intel	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:malloc:allocated_objects_size_avg/load_news/load_news_cnn	835853
280.9%	552587-552589	chromium-rel-win7-gpu-intel	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:malloc:allocated_objects_size_avg/browse_news/browse_news_cnn	835853
255.0%	552588-552590	chromium-rel-mac11-pro	loading.desktop	timeToFirstContentfulPaint_avg/warm/Taobao	835861
252.7%	552587-552589	chromium-rel-win7-gpu-intel	system_health.memory_desktop	memory:chrome:all_processes:reported_by_os:system_memory:private_footprint_size_avg/load_media/load_media_9gag	835853
250.1%	552587-552589	chromium-rel-win7-gpu-intel	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:malloc:allocated_objects_size_avg/load_media/load_media_imgur	835853
222.3%	552587-552589	chromium-rel-win7-gpu-intel	system_health.memory_desktop	memory:chrome:all_processes:reported_by_chrome:malloc:allocated_objects_size_avg/load_tools/load_tools_weather	835853