When does it start? Proposal for changes in High Resolution Time / Navigation Timing

Hello,

Thanks for everyone that took part in the "navigationStart and the actual
start of the navigation" discussion.

I put together a report summarizing what I learned in the discussion,
proposing a spec change for High Resolution L2 and wondering if we should
consider a fix for for Navigation Timing L1 too.

The doc is available for comments:

https://docs.google.com/a/chromium.org/document/d/1XjmlMpbPgQkBpj_sayrXyiyyImPiL0wyueWfiuD7bk0/

I'd be curious to know what do you think.

Cheers,
Przemek