Interface needs facelift on history shown when long press on nav back/forward

[bsclifton]

Initial implementation of history showing when you long press on the navigator back/forward buttons was done w/ #2699. Some additional polish done w/ #2733

In the original issue, @bradleyrichter proposed the following look and feel for the history menu:

Feature descriptions (text copied verbatim from original comment):

• hover help balloon to remind you that mouse down has hidden functionality
• holding down the back button should open a tab-specific list of pages ordered based on the history of page visits only for that tab
• holding down the forward button (when available) should open a list of the available forward pages in the tabs history
• each entry uses the same styling as the search results popup which includes both the page title and the URL
• This popup list window can be opened via long press with selection on mouse up, or as a right-click with selection on mouse down
• at the bottom, there are 2 choices.
  • All the way back (skips back to the top of the history chain)
  • show all history... (link to open about:history when it becomes available)

additional note:

• the list should only show 10 entries at a time. Selecting the last one in the list will of course refresh the list when it is next used after that page loads. Then another 10 will be shown.

[bsclifton]

This isn't entirely addressed with brave-core (ex: url not shown), but it's pretty close: