Add bt traffic accounting

Bug:26039657
Change-Id: I8f8d0389b5b55e02b4a3528b010b76938d87a2a3

src/com/android/settings/fuelgauge/FakeUid.java

@@ -77,6 +77,11 @@ public class FakeUid extends Uid {
         return 0;
     }
 
+    @Override
+    public long getBluetoothControllerActivity(int type, int which) {
+        return 0;
+    }
+
     @Override
     public void noteWifiRunningLocked(long elapsedRealtime) {
     }