commit f6f6340048f0ec9535c310d16dd515133fb04c50
author jamescook <jamescook@chromium.org> Fri Jun 24 01:17:55 2016
committer Commit bot <commit-bot@chromium.org> Fri Jun 24 01:19:26 2016
tree d544ab8689830c67c8f06ea4b81e229fb913f762
parent 5cd4599fb20c05ab9063b03ef48caa69c3c453bc

mash: Convert TrayBackgroundView to wm common types

Also convert StatusAreaWidget usage to WmShelf. This is closer to the long-
term pattern we want, where StatusAreaWidget is accessed via wm types.

* Eliminate the TrayBackgroundView::status_area_widget() accessors
* Cache a copy of StatusAreaWidget* in subclasses where needed

Move the following interdependent files:
move_source_file.py ash/system/tray/tray_background_view.* ash/common/system/tray/
move_source_file.py ash/system/tray/tray_bubble_wrapper.* ash/common/system/tray/
move_source_file.py ash/system/tray/tray_event_filter.* ash/common/system/tray/
move_source_file.py ash/system/tray/system_tray_bubble.* ash/common/system/tray/

BUG=619636
TEST=ash_unittests
TBR=stevenjb@chromium.org for 1 line rename in c/b/ui/chromeos/

Review-Url: https://codereview.chromium.org/2091933002
Cr-Commit-Position: refs/heads/master@{#401769}