We're no longer allowing any notification to be a bubble if the app is
foreground when the notif was sent; it must always fulfill the communication
policy.
- removed check & FLAG_BUBBLE when app is foreground
- removed the tests for FLAG_BUBBLE on foreground produced bubbles
- added a test to ensure that FLAG_BUBBLE doesn't happen just because the
app is foreground
- attempted to clean up some of the bubble helper methods
- no foreground service bubbles unless its a phone call (test for this
in CTS CL)
Test: atest NotificationManagerServiceTest
Test: atest NotificationManagerTest (needs CTS CL)
Bug: 138116133
Bug: 144352570
Change-Id: Idba370c23a3ccaa6479f61a94632f29d623a1e76
9e923e1c83