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- Create a base class for quick actions controller.
- Create silence phone controller that connect to the DND controller in PhoneHubManager. Display the icons according to the states.
- Hook up the quick actions UI in the bubble to silence phone controller. Enable hotspot and locate phone implementation will be added in the next CL.

BUG=1106937,1126208

Change-Id: I3eb511e1843cd4cb6b80316a706a2dcbc61a8e49
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2419552
Commit-Queue: Andre Le <leandre@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Tim Song <tengs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811478}