Merge changes Ic36b01cd,I522b2062,I683275d7 am: 3a33ee20e9
am: ff23c9b653

* commit 'ff23c9b6539b032d3ac95dbbd13dc92c0cf6953b':
  Make gradle wrapper executable
  Cleanup unused items & lint warnings
  Mopria HP Printer Recommendation Example

Change-Id: Ic98176e29441bd89d46e7935fcc9d2b5249aec08