Makes Panel related classes use ash/wm/common types

ash/root_window_controller.cc

 // 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.
 
 #include "ash/root_window_controller.h"
 
 #include <queue>
 #include <vector>
 
 #include "ash/ash_constants.h"
@@ skipping 804 matching lines @@
   docked_layout_manager_ =
       new DockedWindowLayoutManager(docked_container, workspace_controller());
   docked_container->SetLayoutManager(base::WrapUnique(docked_layout_manager_));
 
   // Installs SnapLayoutManager to containers who set the
   // |kSnapsChildrenToPhysicalPixelBoundary| property.
   wm::InstallSnapLayoutManagerToContainers(root_window);
 
   // Create Panel layout manager
   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
-  panel_layout_manager_ = new PanelLayoutManager(panel_container);
-  panel_container->SetLayoutManager(panel_layout_manager_);
+  wm::WmWindow* wm_panel_container = wm::WmWindowAura::Get(panel_container);
+  panel_layout_manager_ = new PanelLayoutManager(wm_panel_container);
+  wm_panel_container->SetLayoutManager(base::WrapUnique(panel_layout_manager_));
   panel_container_handler_.reset(new PanelWindowEventHandler);
   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 
   // Install an AttachedPanelWindowTargeter on the panel container to make it
   // easier to correctly target shelf buttons with touch.
   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
                            -kResizeOutsideBoundsSize,
                            -kResizeOutsideBoundsSize,
                            -kResizeOutsideBoundsSize);
   gfx::Insets touch_extend = mouse_extend.Scale(
@@ skipping 249 matching lines @@
   else
     DisableTouchHudProjection();
 }
 
 RootWindowController* GetRootWindowController(
     const aura::Window* root_window) {
   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
 }
 
 }  // namespace ash