Fix some Gmail tests
Fix some Gmail tests

The SSLSessionCache attempts to create a directory through the context
In MockContext, this throws an UnsupportedOperationExcetion

This CL changes MockContext2 in ProviderTestCase2 to allow getDir
to be called, but the directory is named so it will be seperated from
a directory created by a regular context

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base