Merge change 21748 into eclair

* changes:
  Get At command count from Bluetooth headset.

core/java/com/android/internal/os/BatteryStatsImpl.java

@@ -978,10 +978,13 @@ public final class BatteryStatsImpl extends BatteryStats {
         } else if (mBtHeadset != null) {
             return getCurrentBluetoothPingCount() - mBluetoothPingStart;
         }
-        return -1;
+        return 0;
     }
 
     public void setBtHeadset(BluetoothHeadset headset) {
+        if (headset != null && mBtHeadset == null && isOnBattery() && mBluetoothPingStart == -1) {
+            mBluetoothPingStart = getCurrentBluetoothPingCount();
+        }
         mBtHeadset = headset;
     }
 

services/java/com/android/server/am/BatteryStatsService.java

@@ -260,6 +260,7 @@ public final class BatteryStatsService extends IBatteryStats.Stub {
         enforceCallingPermission();
         synchronized (mStats) {
             mStats.noteBluetoothOnLocked();
+            mStats.setBtHeadset(new android.bluetooth.BluetoothHeadset(mContext, null));
         }
     }