android_frameworks_base/packages/SystemUI/proguard.flags

-keep class com.android.systemui.statusbar.tablet.TabletStatusBarService {
  public void notificationIconsClicked(android.view.View);
  public void systemInfoClicked(android.view.View);
  public void recentButtonClicked(android.view.View);
  public void toggleLightsOut(android.view.View);
}

-keep class com.android.systemui.statusbar.policy.KeyButtonView {
  public float getDrawingAlpha();
  public float getGlowAlpha();
  public float getGlowScale();
  public void setDrawingAlpha(float);
  public void setGlowAlpha(float);
  public void setGlowScale(float);
}