log more settings actions

airplane mode
  bluetooth
  cell data
  do not disturb

Bug: 20264417
Change-Id: I726033a126fba9f9dffc916806d636feea04033b

src/com/android/settings/bluetooth/BluetoothEnabler.java

@@ -27,6 +27,7 @@ import android.provider.Settings;
 import android.widget.Switch;
 import android.widget.Toast;
 
+import com.android.internal.logging.MetricsLogger;
 import com.android.settings.R;
 import com.android.settings.search.Index;
 import com.android.settings.widget.SwitchBar;
@@ -184,6 +185,8 @@ public final class BluetoothEnabler implements SwitchBar.OnSwitchChangeListener
             switchView.setChecked(false);
         }
 
+        MetricsLogger.action(mContext, MetricsLogger.ACTION_BLUETOOTH_TOGGLE, isChecked);
+
         if (mLocalAdapter != null) {
             mLocalAdapter.setBluetoothEnabled(isChecked);
         }