Improved Find Interaction

[davimack]

Problem:

• When the "Find in page" bar is visible, the user is unable to scroll to reveal the URL bar.
• User expectations are that the URL bar will show after a hard swipe.
• If the user has the URL bar at top, the user is focused on the expected URL bar, but isn't paying any attention to the Find bar.

Workarounds?

• User doesn't remember the Find bar, so doesn't use the X to close it.  This is the equivalent to "well, remember to use the feature!"
• Leaving the URL bar open doesn't work, because Find hides it.

Ideas for modification of the "find" bar:

1. Flash Find bar when user attempts to show the URL bar (when a swipe occurs which meets the threshold of a swipe, but the Find bar is visible).
2. Slide Find bar out of view when user scrolls, perhaps leaving behind a small tab to indicate Find is active.
3. Style Find bar so that it doesn't blend into the bottom, operating system bar.

[KevinBrosnan]

This is not a feature request. It is a bug report and is reported at https://github.com/mozilla-mobile/fenix/issues/9165