Scenario 1:

1. Open facebook
2. Check login screens appears

Issue:
Some devices like L/M ver, language selection screen displays (not always). Other device it never appears

Scenarios 2:
1. Click on any link with an email app like Gmail
2. App intent pops up to select 'open with'

Issue:
If app intent selected and stored in defaults, consecutive test run fails, since it is looking for intent dialog 

So, we need a way to check if something not appears, need to skip that step, but not to fail it & move onto next step in the test execution.