Revert 233787 "Eliminate Shell::RootWindowList in favor of aura:..."

trunk/src/ash/magnifier/partial_magnification_controller.h

Index: trunk/src/ash/magnifier/partial_magnification_controller.h
===================================================================
--- trunk/src/ash/magnifier/partial_magnification_controller.h	(revision 233812)
+++ trunk/src/ash/magnifier/partial_magnification_controller.h	(working copy)
@@ -10,6 +10,10 @@
 #include "ui/gfx/point.h"
 #include "ui/views/widget/widget_observer.h"
 
+namespace aura {
+class RootWindow;
+}
+
 namespace ash {
 
 const float kDefaultPartialMagnifiedScale = 1.5f;
@@ -48,7 +52,7 @@
   void SwitchTargetRootWindow(aura::Window* new_root_window);
 
   // Returns the root window that contains the mouse cursor.
-  aura::Window* GetCurrentRootWindow();
+  aura::RootWindow* GetCurrentRootWindow();
 
   // Return true if the magnification scale > kMinPartialMagnifiedScaleThreshold
   bool IsPartialMagnified() const;