Revert of Rename wm_core_export.h to wm_export.h and the wm_core target to just wm

ui/wm/core/visibility_controller.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_WM_CORE_VISIBILITY_CONTROLLER_H_
 #define UI_WM_CORE_VISIBILITY_CONTROLLER_H_
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "ui/aura/client/visibility_client.h"
-#include "ui/wm/wm_export.h"
+#include "ui/wm/core/wm_core_export.h"
 
 namespace wm {
 
-class WM_EXPORT VisibilityController
+class WM_CORE_EXPORT VisibilityController
     : public aura::client::VisibilityClient {
  public:
   VisibilityController();
   virtual ~VisibilityController();
 
  protected:
   // Subclasses override if they want to call a different implementation of
   // this function.
   // TODO(beng): potentially replace by an actual window animator class in
   //             window_animations.h.
@@ skipping 14 matching lines @@
 // Example:
 //
 // void ViewName::UnanimatedAction() {
 //   SuspendChildWindowVisibilityAnimations suspend(parent);
 //   // Perform unanimated action here.
 //   // ...
 //   // When the method finishes, visibility animations will return to their
 //   // previous state.
 // }
 //
-class WM_EXPORT SuspendChildWindowVisibilityAnimations {
+class WM_CORE_EXPORT SuspendChildWindowVisibilityAnimations {
  public:
   // Suspend visibility animations of child windows.
   explicit SuspendChildWindowVisibilityAnimations(aura::Window* window);
 
   // Restore visibility animations to their original state.
   ~SuspendChildWindowVisibilityAnimations();
 
  private:
   // The window to manage.
   aura::Window* window_;
 
   // Whether the visibility animations on child windows were originally enabled.
   const bool original_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(SuspendChildWindowVisibilityAnimations);
 };
 
 // Tells |window| to animate visibility changes to its children.
-void WM_EXPORT SetChildWindowVisibilityChangesAnimated(
+void WM_CORE_EXPORT SetChildWindowVisibilityChangesAnimated(
     aura::Window* window);
 
 }  // namespace wm
 
 #endif  // UI_WM_CORE_VISIBILITY_CONTROLLER_H_