Add hit test for TabGridBottomToolbar in transparent layout.

If the bottom toolbar of tab grid is not in compact layout or remote
tabs page, it is transparent and should not respond to tapping events
unless the new tab button is being tapped, so that user can tap the
tabs behind the toolbar.

Bug: 924106
Change-Id: Ie6406d23553bcb168053688f89c0a90fc2eee3ae
Reviewed-on: https://chromium-review.googlesource.com/c/1460443
Commit-Queue: edchin <edchin@chromium.org>
Reviewed-by: edchin <edchin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630607}
1 file changed