added ShadowTrafficsStats with test. Volley no longer complains.
removed UNSUPPORTED constant, changed all return values with TrafficStats.UNSUPPORTED
Changed all expected values with TrafficStats.UNSUPPORTED
fixed indentations
Add implementation for addAccountExplicitly() and blockingGetAuthToken() in ShadowAccountManager
Add one more test to check that two different accounts of the same type are added correctly
Add couple more assertions
Fix spelling error
ShadowAccountManager returns singleton instance of AccountManager
Merge pull request #577 from esam091/master

Created ShadowTrafficStats
Merge pull request #589 from stefanodacchille/shadow_account_manager_improvements

Enhancements to ShadowAccountManager.
Implemented IntentFilter#hasAction()
Initialize ShadowSystemClock.bootedAt to 0, rather than Robolectric.getUiThreadScheduler().getCurrentTime(). Otherwise, the value assigned to bootedAt will depend on when ShadowSystemClock happens to get loaded by the classloader, which may be at a time when getUiThreadScheduler().getCurrentTime() has already been advanced, which causes SystemClock.uptimeMillis() to report a time less than getuiThreadScheduler().getCurrentTime().
Remove unecessary catch-exception dependency

Scope was wrong and only used in one place
Merge pull request #603 from erichaugh/master

Initialize ShadowSystemClock.bootedAt to 0.
Support parsing of intents contained in preferences
Set component name
Added getFlags() to ShadowPendingIntent
add shadow support for Activity.isTaskRoot
Merge pull request #608 from adennie/activity-istaskroot

add shadow support for Activity.isTaskRoot