URL copy/paste and Find mode focus issues in latest Chrome builds

[innaterebel]

Derived from #2833 now that Chrome also seems to have received bizzare changes in this area. (mainly this comment)
I have waited four Dev releases (once a week) to conclude these regressions are likely to stick, so contributors may want to examine them early before they eventually reach Stable.

There are at least three issues emerged together in Chrome 74:

1. When Find is initiated, the HUD gets no focus. You have to click in it to start inputting.
2. yy is broken, fails to copy anything, despite the HUD says it succeeded.
3. p sends empty string instead of the string/URL copied in clipboard, resulting in default search engine being opened with no query.

3 is tricky to reproduce, it most likely to repro when you don't p immediately after copy a link, e.g. copy a link via yf, scroll around to read the rest of page, then p.
If you p right after yf without any operation in between, the pasting will succeed.

[gdh1995]

All 3 points confirmed. I'll take a try in the next weekend / week.

[innaterebel]

Chrome 74 has entered beta phase without anything changed (if not worse. Now I am getting occasions even yf fails, not reproducible though), these are definitely going into stable.

[innaterebel]

@smblott-github Chromium M74 has just reached Chrome stable.

[alanhe421]

how to solve it?downgrade chrome?

[gdh1995]

@alanhg There has been a PR to fix it, and just need to wait it to be merged .