This cl fixes the problem that CDM calls RoleManager.removeRoleHolderAsUser()
will kill the application's process that lead to the poor user
experience.
In order to fix the problem:
1. Introduce a new OnUidImportanceListener which watches the
importance of the packages. In this class, we only interested in
the importance of the running process is greater than
IMPORTANCE_VISIBLE.
2. Introduce a new field in AssociationInfo class: 'mRevoked' to
indicate the associaiton has been reovked and pending for
role holder removal. So that the revoked association can store
in the same place as the active associaiton -> easy maintenance.
3. Finally remove the role holder for the packages are not visible to
the users.
Bug: 189250370
Test: atest CtsCompanionDeviceManagerCoreTestCases
atest CtsCompanionDeviceManagerUiAutomationTestCases
atest CtsOsTestCases:CompanionDeviceManagerTest
Change-Id: Ib7fb08b0d800c62a9ee708ddd52cd174de1829d9
Merged-In: Ib7fb08b0d800c62a9ee708ddd52cd174de1829d9
3f9ae86e45