Since MockAccountManager was passing null to the AccountManager
constructor, unit tests where the AccountManager attempts to call
the AccountManagerService were crashing.
Now the getAccountsByTypeAndFeatures and blockingGetAuthToken
(which are the calls that the Gmail unit tests call) call a small
stub
At some point, all of the other AccountManager calls should be stubbed
out
And ability to exclude tests with given annotation.
Also fix class cast compile warning in emma output method.
Bug 2239240
Change-Id: I56273a51a8c58a690680bdb612615fab69e6e13f
