Disable HW BACK key at the incoming-call screen

For devices with HW BACK key, it should be disabled at the incoming-
call screen.  Therefore, a user will not leave the screen by mistake.

Bug: 11548503
Change-Id: I2f4f875c23687afe52a5f816550b9383b9a852c8
1 file changed
tree: 043a2b9ea19faa359a1ddb64e20d7e43658b380d
  1. Android.mk
  2. AndroidManifest.xml
  3. proguard.flags
  4. res/
  5. src/