SystemUI : PerfTile start vector animation on main thread

android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:6254)
at android.view.ViewRootImpl.invalidateChildInParent(ViewRootImpl.java:902)
at android.view.ViewGroup.invalidateChild(ViewGroup.java:4637)
at android.view.View.invalidateInternal(View.java:11690)
at android.view.View.invalidate(View.java:11654)
at android.view.View.invalidate(View.java:11638)
at android.widget.ImageView.invalidateDrawable(ImageView.java:231)
at android.graphics.drawable.Drawable.invalidateSelf(Drawable.java:367)
at android.graphics.drawable.AnimatedVectorDrawable.start(AnimatedVectorDrawable.java:430)

Change-Id: I830ce8ee8c0bf731388e94a1d9c6d668b2115aeb