Use a bitfield to store animatable properties.

ash/wm/workspace_controller.cc

Index: ash/wm/workspace_controller.cc
diff --git a/ash/wm/workspace_controller.cc b/ash/wm/workspace_controller.cc
index 1b9fd854a17d4eee88015747dba50dfd2588e0e2..1f89908b8ab2cb6a0afedecf46cb113924013bc8 100644
--- a/ash/wm/workspace_controller.cc
+++ b/ash/wm/workspace_controller.cc
@@ -127,12 +127,10 @@ void WorkspaceController::DoInitialAnimation() {
     settings.SetPreemptionStrategy(ui::LayerAnimator::ENQUEUE_NEW_ANIMATION);
     viewport_->layer()->GetAnimator()->SchedulePauseForProperties(
         base::TimeDelta::FromMilliseconds(kInitialPauseTimeMS),
-        ui::LayerAnimationElement::TRANSFORM,
-        ui::LayerAnimationElement::OPACITY,
-        ui::LayerAnimationElement::BRIGHTNESS,
-        ui::LayerAnimationElement::VISIBILITY,
-        -1);
-
+        ui::LayerAnimationElement::TRANSFORM |
+            ui::LayerAnimationElement::OPACITY |
+            ui::LayerAnimationElement::BRIGHTNESS |
+            ui::LayerAnimationElement::VISIBILITY);
     settings.SetTweenType(gfx::Tween::EASE_OUT);
     settings.SetTransitionDuration(
         base::TimeDelta::FromMilliseconds(kCrossFadeDurationMS));