am eda81264: am a4d5b750: am 0e52fd6f: Add two helper functions to the uiautomator test library

# Via Android Git Automerger (2) and Xia Wang (1)
* commit 'eda81264cea85631ba2a1b16e7b17db80058a6e2':
  Add two helper functions to the uiautomator test library