chromeos: nukes window_state_aura

ash/wm/window_state.h

Index: ash/wm/window_state.h
diff --git a/ash/wm/window_state.h b/ash/wm/window_state.h
index 9438cd7b21a18e661579d88d844fbcbb3d9c734d..25f52bd126e28e99626d2049c9bf47a043eb6756 100644
--- a/ash/wm/window_state.h
+++ b/ash/wm/window_state.h
@@ -33,10 +33,20 @@ enum class WindowPinType;
 }
 
 namespace wm {
+class WindowState;
 class WindowStateDelegate;
 class WindowStateObserver;
 class WMEvent;
 
+// Returns the WindowState for the active window, null if there is no active
+// window.
+ASH_EXPORT WindowState* GetActiveWindowState();
+
+// Returns the WindowState for |window|. Creates WindowState if it doesn't
+// exist. The returned value is owned by |window| (you should not delete it).
+ASH_EXPORT WindowState* GetWindowState(aura::Window* window);
+ASH_EXPORT const WindowState* GetWindowState(const aura::Window* window);
+
 // WindowState manages and defines ash specific window state and
 // behavior. Ash specific per-window state (such as ones that controls
 // window manager behavior) and ash specific window behavior (such as
@@ -323,17 +333,17 @@ class ASH_EXPORT WindowState {
   // Called from the associated WmWindow once the window pin type changes.
   void OnWindowPinTypeChanged();
 
- protected:
-  explicit WindowState(WmWindow* window);
-
  private:
   friend class DefaultState;
   friend class ash::LockWindowState;
   friend class ash::MaximizeModeWindowState;
+  friend WindowState* GetWindowState(aura::Window*);
   FRIEND_TEST_ALL_PREFIXES(WindowAnimationsTest, CrossFadeToBounds);
   FRIEND_TEST_ALL_PREFIXES(WindowAnimationsTest,
                            CrossFadeToBoundsFromTransform);
 
+  explicit WindowState(WmWindow* window);
+
   WindowStateDelegate* delegate() { return delegate_.get(); }
 
   // Returns the window's current always_on_top state.