Keep the split view activities topmost in z-order in Athena

athena/wm/window_manager_impl.h

 // Copyright 2014 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 ATHENA_WM_WINDOW_MANAGER_IMPL_H_
 #define ATHENA_WM_WINDOW_MANAGER_IMPL_H_
 
+#include "athena/athena_export.h"
 #include "athena/input/public/accelerator_manager.h"
 #include "athena/wm/public/window_manager.h"
 #include "athena/wm/title_drag_controller.h"
 #include "athena/wm/window_overview_mode.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "ui/aura/window_observer.h"
 
 namespace wm {
 class ShadowController;
 class WMState;
 }
 
 namespace athena {
 
 namespace test {
 class WindowManagerImplTestApi;
 }
 
 class BezelController;
 class SplitViewController;
 class WindowListProvider;
 class WindowManagerObserver;
 
-class WindowManagerImpl : public WindowManager,
-                          public WindowOverviewModeDelegate,
-                          public aura::WindowObserver,
-                          public AcceleratorHandler,
-                          public TitleDragControllerDelegate {
+class ATHENA_EXPORT WindowManagerImpl : public WindowManager,
+                                        public WindowOverviewModeDelegate,
+                                        public aura::WindowObserver,
+                                        public AcceleratorHandler,
+                                        public TitleDragControllerDelegate {
  public:
   WindowManagerImpl();
   virtual ~WindowManagerImpl();
 
   // WindowManager:
   virtual void ToggleOverview() OVERRIDE;
   virtual bool IsOverviewModeActive() OVERRIDE;
 
+  void ToggleSplitView();
+
  private:
   friend class test::WindowManagerImplTestApi;
   friend class AthenaContainerLayoutManager;
 
   enum Command {
     CMD_TOGGLE_OVERVIEW,
     CMD_TOGGLE_SPLIT_VIEW,
   };
 
   // Sets whether overview mode is active.
   void SetInOverview(bool active);
 
-  void ToggleSplitview();
-
   void InstallAccelerators();
 
   // WindowManager:
   virtual void AddObserver(WindowManagerObserver* observer) OVERRIDE;
   virtual void RemoveObserver(WindowManagerObserver* observer) OVERRIDE;
   virtual void ToggleSplitViewForTest() OVERRIDE;
 
   // WindowOverviewModeDelegate:
   virtual void OnSelectWindow(aura::Window* window) OVERRIDE;
   virtual void OnSplitViewMode(aura::Window* left,
@@ skipping 23 matching lines @@
   scoped_ptr<TitleDragController> title_drag_controller_;
   scoped_ptr<wm::ShadowController> shadow_controller_;
   ObserverList<WindowManagerObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerImpl);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_WM_WINDOW_MANAGER_IMPL_H_