| # Copyright 2017 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # Set the required tracing categories specified by page_cycler_v2 |
| def AugmentOptionsForLoadingMetrics(tbm_options): |
| cat_filter = tbm_options.config.chrome_trace_config.category_filter |
| |
| # "blink.console" is used for marking ranges in |
| # cache_temperature.MarkTelemetryInternal. |
| cat_filter.AddIncludedCategory('blink.console') |
| |
| # "navigation" and "blink.user_timing" are needed to capture core |
| # navigation events. |
| cat_filter.AddIncludedCategory('navigation') |
| cat_filter.AddIncludedCategory('blink.user_timing') |
| |
| # "loading" is needed for first-meaningful-paint computation. |
| cat_filter.AddIncludedCategory('loading') |
| |
| # "toplevel" category is used to capture TaskQueueManager events |
| # necessary to compute time-to-interactive. |
| cat_filter.AddIncludedCategory('toplevel') |
| |
| # "network" category is used to capture ResourceLoad events necessary to |
| # properly compute time-to-interactive. |
| cat_filter.AddDisabledByDefault('disabled-by-default-network') |
| |
| tbm_options.AddTimelineBasedMetric('loadingMetric') |
| return tbm_options |
