Add new options for call waiting response in InCallUI

When an incoming call is received while there is already an active call,
the user will be given four choices for the response:

1) Left button: hold the current call and answer incoming call
2) Bottom button: end the current call and answer the incoming call
3) Right button: decline the incoming call
4) Top button: Send a text message to the incoming caller if texting
   is enabled

The changes in this component include updated icon graphics, display of
text hints, and new APIs for additonal flag.

Change-Id: Ic97e0fde12ae98afa0124f4bb5326e874a146e91
37 files changed
tree: d04578f38ce4c01a4563dde8d3dc9163b97f5f20
  1. res/
  2. src/
  3. tests/
  4. .gitreview
  5. proguard.flags