Snap screen rotation animation layers to final position if the animation is aborted.

ash/rotator/screen_rotation_animation.cc

Index: ash/rotator/screen_rotation_animation.cc
diff --git a/ash/rotator/screen_rotation_animation.cc b/ash/rotator/screen_rotation_animation.cc
index eaabe2efdca545596edeec7e2ffd352e52c11182..cc8698d4351b9019a641dffdae42512962760ec0 100644
--- a/ash/rotator/screen_rotation_animation.cc
+++ b/ash/rotator/screen_rotation_animation.cc
@@ -61,6 +61,9 @@ void ScreenRotationAnimation::OnGetTarget(TargetValue* target) const {
 }
 
 void ScreenRotationAnimation::OnAbort(ui::LayerAnimationDelegate* delegate) {
+  TargetValue target_value;
+  OnGetTarget(&target_value);
+  delegate->SetTransformFromAnimation(target_value.transform);
 }
 
 }  // namespace ash