Add intelligence to helper method in UxPerfUiAutomation class to query
the present view during the method call rather than passing this in
explicitly as a parameter.
Fix confirmAccess method to first test for the existence of a
confirmation object before waiting on timeout.
Remove duplicate logging that is already captured in the standalone
workloads for Gmail and Skype. Expand comment for tagPhoto method in
Gmail workload.
A new workload for testing context switching between applications.
Uses googlephotos as the producer workload and gmail and skype as
the consumer workloads.
