Revert 173417 - Broke on win_aura

ash/wm/ash_activation_controller.h

Index: ash/wm/ash_activation_controller.h
===================================================================
--- ash/wm/ash_activation_controller.h	(revision 173420)
+++ ash/wm/ash_activation_controller.h	(working copy)
@@ -5,7 +5,6 @@
 #ifndef ASH_WM_ASH_ACTIVATION_CONTROLLER_H_
 #define ASH_WM_ASH_ACTIVATION_CONTROLLER_H_
 
-#include "ash/ash_export.h"
 #include "ash/wm/activation_controller_delegate.h"
 #include "base/compiler_specific.h"
 #include "base/basictypes.h"
@@ -13,7 +12,7 @@
 namespace ash {
 namespace internal {
 
-class ASH_EXPORT AshActivationController : public ActivationControllerDelegate {
+class AshActivationController : public ActivationControllerDelegate {
  public:
   AshActivationController();
   virtual ~AshActivationController();
@@ -23,11 +22,6 @@
   virtual aura::Window* WillActivateWindow(aura::Window* window) OVERRIDE;
   virtual aura::Window* WillFocusWindow(aura::Window* window) OVERRIDE;
 
-  // Returns a handle to the launcher on the active root window which will
-  // be activated as fallback. Also notifies the launcher, so it can return
-  // true from Launcher::CanActivate().
-  aura::Window* PrepareToActivateLauncher();
-
   DISALLOW_COPY_AND_ASSIGN(AshActivationController);
 };