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

Delta	Revision Range	Bot	Test Suite	Test
281.8%	568510-568598	linux-perf	smoothness.top_25_smooth	percentage_smooth/yahoo_sports
103.7%	569641-569732	android-webview-nexus6	blink_perf.parser	query-selector-all-class-deep
93.9%	568917-569017	android-webview-nexus5X	thread_times.simple_mobile_sites	thread_IO_cpu_time_per_frame/flickr_scroll
93.4%	568953-569071	android-webview-nexus6	thread_times.simple_mobile_sites	thread_IO_cpu_time_per_frame/flickr_scroll
80.6%	569641-569732	android-webview-nexus6	blink_perf.parser	query-selector-all-deep
77.9%	1528955187-1529642116	health-plan-webview-phone	system_health.memory_mobile	memory:webview:all_processes:reported_by_chrome:skia:effective_size_avg/browse_media/browse_media_youtube
76.7%	568953-569071	android-webview-nexus6	system_health.memory_mobile	memory:webview:all_processes:reported_by_os:system_memory:java_heap:proportional_resident_size_avg/background_news/background_news_nytimes
72.1%	568953-569071	android-webview-nexus6	smoothness.tough_canvas_cases	frame_times/microsoft_video_city
68.1%	1529555902-1529564910	health-plan-webview-phone	system_health.memory_mobile	memory:webview:all_processes:reported_by_os:system_memory:java_heap:proportional_resident_size_avg/background_news/background_news_nytimes
65.8%	568953-569071	android-webview-nexus6	thread_times.simple_mobile_sites	thread_other_cpu_time_per_frame/flickr_scroll

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

Delta	Revision Range	Bot	Test Suite	Test	Bug
358400.0%	568562-568659	android-nexus5X	system_health.memory_mobile	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/background_social/background_social_facebook	NONE
358400.0%	568483-568607	android-nexus5	system_health.memory_mobile	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/background_social/background_social_facebook	NONE
358400.0%	1529470636-1529482382	health-plan-clankium-phone	system_health.memory_mobile	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/background_social/background_social_facebook	855405
204800.0%	568562-568659	android-nexus5X	system_health.memory_mobile	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/background_media/background_media_imgur	NONE
204800.0%	568483-568607	android-nexus5	system_health.memory_mobile	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/background_media/background_media_imgur	NONE
204800.0%	568608-568703	android-nexus5	system_health.memory_mobile	memory:chrome:all_processes:reported_by_chrome:gpu:effective_size_avg/background_search/background_search_google	855407
102400.0%	568534-568615	android-webview-nexus6	system_health.memory_mobile	memory:webview:all_processes:reported_by_chrome:gpu:effective_size_avg/background_media/background_media_imgur	855402
102400.0%	568534-568615	android-webview-nexus6	system_health.memory_mobile	memory:webview:all_processes:reported_by_chrome:gpu:effective_size_avg/background_search/background_search_google	855402
102400.0%	568538-568621	android-webview-nexus5X	system_health.memory_mobile	memory:webview:all_processes:reported_by_chrome:gpu:effective_size_avg/background_search/background_search_google	855402
102400.0%	568538-568621	android-webview-nexus5X	system_health.memory_mobile	memory:webview:all_processes:reported_by_chrome:gpu:effective_size_avg/background_media/background_media_imgur	855402