mash: Migrate some misc ShelfLayoutManager deps to ash common.

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 99c12cd20aee455b78c41863975b3dd62a1f2212..32c662ad45e973c1fabca0ed8285a76a405d6ec1 100644
--- a/ash/wm/workspace_controller.cc
+++ b/ash/wm/workspace_controller.cc
@@ -8,6 +8,7 @@
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/shell_window_ids.h"
+#include "ash/common/wm/window_animation_types.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/workspace/workspace_layout_manager.h"
 #include "ash/common/wm/workspace/workspace_layout_manager_backdrop_delegate.h"
@@ -136,7 +137,7 @@ void WorkspaceController::DoInitialAnimation() {
             ui::LayerAnimationElement::VISIBILITY);
     settings.SetTweenType(gfx::Tween::EASE_OUT);
     settings.SetTransitionDuration(
-        base::TimeDelta::FromMilliseconds(kCrossFadeDurationMS));
+        base::TimeDelta::FromMilliseconds(wm::kCrossFadeDurationMS));
     viewport_->layer()->SetTransform(gfx::Transform());
     viewport_->layer()->SetOpacity(1.0f);
   }