Always align slider bubbles to the bottom of the desktop.

The slider was aligned towards the system tray icon view in the shelf
by the bubble's bottom edge. It meant that the slider bubble was shown
apart from the bottom of the desktop when the shelf layout is either
right or left. It was not consistent with popup notification, causing
view overlap between notifications and a slider bubble.

Bug: 862496
Change-Id: Ie6db618f8b744ecc4de52ee7a4866ca9e9ecd26c
Reviewed-on: https://chromium-review.googlesource.com/1134643
Reviewed-by: Tetsui Ohkubo <tetsui@chromium.org>
Reviewed-by: Yoshiki Iguchi <yoshiki@chromium.org>
Commit-Queue: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574521}
1 file changed