commit 5f6c901ad062cd7d88db09b555e28ee354ca66c6
author Yorke Lee <yorkelee@google.com> Fri Jul 24 12:27:46 2015 -0700
committer Yorke Lee <yorkelee@google.com> Fri Jul 24 12:52:02 2015 -0700
tree 204db626234e773f39461181ba0c0b8a3388f428
parent a0018a3f788f381313ee5c5f2b15ddce8d7ec5d1

Protect against lack of WRITE_SYSTEM_SETTINGS AppOp

Guard the following entry points with checks against the AppOp

1) Launch of SoundSettingsFragment
Fallback: Send to system sound settings instead

2) onResume of SoundSettingsFragment (this can happen if the AppOp
is toggled by the user in the background)
Fallback: Return to main Dialer settings instead

3) Toggling of various perferences (this can happen in monkey tests)
Fallback: Show toast, ignore settings chance

Bug: 22660372

Change-Id: Ief5d74166d35a9718ea664f378f6930e777f2923