Remove Dependency.get from CarDevProvCont.

Remove a call to Dependency.get(MAIN_HANDLER) from the
CarDeviceProvisionedControllerImpl.

Use the new GlobalSettings and SecureSettings classes while we're
here, removing the need to inject a context.

NO_TYPO_CHECK=Spelling errors inherited from framework class.

Bug: 144503618
Test: manual
Change-Id: Idf14549abe3d80b62a4be7ef7f162f1224b35c4a
3 files changed