cdb57aeb0e
- Relax restriction on audio service calls that assume the volume ui is systemui, allow calls from a blessed component app. - Blessed component app service saved in secure settings. - SystemUI mediates requests to replace the volume dialog, prompts the user on activation. - Show a low pri ongoing notification when the volume dialog is being replaced, to allow user restoration at any time. - Replace the controller management code in VolumeUI to use a ServiceMonitor, backed by the new blessed app component setting. - Add proper zen-related noman client wrappers, make avail to the registered volume controller. - Everything is still @hidden, no api impact. Bug: 19260237 Change-Id: Ie1383f57659090318a7eda737fdad5b8f88737d4