Creates BubbleBarController which is responsible for registering
a listener to hear about bubble state changes and propagates those
changes to BubbleBarViewController.
Additionally, it loads the data and creates the individual BubbleViews
that are added to BubbleBarView.
Bug: 253318833
Test: manual, with other CLs, see go/bubble-bar-tests
Flag: WM_BUBBLE_BAR
Change-Id: I45b0d3a764cd14b2fc5d34aec2b81c7fecb541cf
Adds two controllers to manage and animate the stash / unstash state
of the bubble bar. Adds them to BubbleControllers.
Bug: 253318833
Test: manual, with other CLs, see go/bubble-bar-tests
Flag: WM_BUBBLE_BAR
Change-Id: I1a67da888384b1ae0fe3f79a25ea6a2c1b7eef87
BubbleBarView shows BubbleViews in a bar similar to transient
taskbar. BubbleBarView can be collapsed (bubbles in a stack) or
expanded (bubbles all visible). When expanded, WMShell will be
notified to show the appropriate expanded bubble view (not part of
this CL).
Also creates BubbleControllers which contains BubbleBarViewController
and will eventually contain other controllers related to stashing
for the bubble bar.
Bug: 253318833
Test: manual, with other CLs, see go/bubble-bar-tests
Flag: WM_BUBBLE_BAR
Change-Id: I990ab3da6614db90ffff8c40281dc7f16b3957f6
