Moves WindowCycleList/Controller to ash/common

ash/common/wm_window.h

Index: ash/common/wm_window.h
diff --git a/ash/common/wm_window.h b/ash/common/wm_window.h
index f1588f307e32b4e75760512278ccc1f62ef56eb7..4f50f227ac0d789b2f4355a05134493ac29467c2 100644
--- a/ash/common/wm_window.h
+++ b/ash/common/wm_window.h
@@ -32,6 +32,7 @@ class Layer;
 }
 
 namespace views {
+class View;
 class Widget;
 }
 
@@ -271,6 +272,9 @@ class ASH_EXPORT WmWindow {
   // container. This is used by SetBoundsInScreen().
   virtual void SetDescendantsStayInSameRootWindow(bool value) = 0;
 
+  // Returns a View that renders the contents of this window's layers.
+  virtual std::unique_ptr<views::View> CreateViewWithRecreatedLayers() = 0;
+
   virtual void AddObserver(WmWindowObserver* observer) = 0;
   virtual void RemoveObserver(WmWindowObserver* observer) = 0;
   virtual bool HasObserver(const WmWindowObserver* observer) const = 0;