Fix bug 2684341 Don't steal the media button event from the phone app is the phone is ringing, even in silent mode.
Fix bug 2684341 Don't steal the media button event from the phone
app is the phone is ringing, even in silent mode.

Use the PhoneStateListener to know whether the phone is ringing,
as the mode is not MODE_RINGTONE when ringing in silent mode.

Change-Id: Iede350cecde0b663d50f9b4a57f9a9ef08066c0d

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base