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- The page load metrics subsystem captures and records UMA metrics related to
- page loading. This includes page timing metrics, such as time to first
- paint, as well as page interaction metrics, such as number of page loads
- aborted before first paint.
- The page load metrics subsystem is shared by Chrome and WebView, but not
- supported on iOS, as it requires hooks into Blink for page timing metrics that
- are unavailable on iOS.
- This component has the following structure:
- - components/page_load_metrics/browser: browser process code
- - components/page_load_metrics/common/: code shared by browser and renderer, such
- as IPC messages
- - components/page_load_metrics/renderer : renderer process code
- For additional information on this subsystem, see
- https://docs.google.com/document/d/1HJsJ5W2H_3qRdqPAUgAEo10AF8gXPTXZLUET4X4_sII/edit
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