README 865 B

1234567891011121314151617
  1. The page load metrics subsystem captures and records UMA metrics related to
  2. page loading. This includes page timing metrics, such as time to first
  3. paint, as well as page interaction metrics, such as number of page loads
  4. aborted before first paint.
  5. The page load metrics subsystem is shared by Chrome and WebView, but not
  6. supported on iOS, as it requires hooks into Blink for page timing metrics that
  7. are unavailable on iOS.
  8. This component has the following structure:
  9. - components/page_load_metrics/browser: browser process code
  10. - components/page_load_metrics/common/: code shared by browser and renderer, such
  11. as IPC messages
  12. - components/page_load_metrics/renderer : renderer process code
  13. For additional information on this subsystem, see
  14. https://docs.google.com/document/d/1HJsJ5W2H_3qRdqPAUgAEo10AF8gXPTXZLUET4X4_sII/edit