Makes Panel related classes use ash/wm/common types

ash/wm/panels/panel_layout_manager_unittest.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/wm/panels/panel_layout_manager.h"
 
 #include "ash/ash_switches.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_button.h"
@@ skipping 62 matching lines @@
   aura::Window* CreatePanelWindow(const gfx::Rect& bounds) {
     return CreatePanelWindowWithDelegate(NULL, bounds);
   }
 
   aura::Window* GetPanelContainer(aura::Window* panel) {
     return Shell::GetContainer(panel->GetRootWindow(),
                                kShellWindowId_PanelContainer);
   }
 
   views::Widget* GetCalloutWidgetForPanel(aura::Window* panel) {
-    PanelLayoutManager* manager =
-        static_cast<PanelLayoutManager*>(GetPanelContainer(panel)->
-                                         layout_manager());
+    wm::WmWindow* wm_panel = wm::WmWindowAura::Get(panel);
+    PanelLayoutManager* manager = PanelLayoutManager::Get(wm_panel);
     DCHECK(manager);
-    PanelLayoutManager::PanelList::iterator found = std::find(
-        manager->panel_windows_.begin(), manager->panel_windows_.end(),
-        panel);
+    PanelLayoutManager::PanelList::iterator found =
+        std::find(manager->panel_windows_.begin(),
+                  manager->panel_windows_.end(), wm_panel);
     DCHECK(found != manager->panel_windows_.end());
     DCHECK(found->callout_widget);
-    return reinterpret_cast<views::Widget*>(found->callout_widget);
+    return found->CalloutWidget();
   }
 
   void PanelInScreen(aura::Window* panel) {
     gfx::Rect panel_bounds = panel->GetBoundsInRootWindow();
     gfx::Point root_point = gfx::Point(panel_bounds.x(), panel_bounds.y());
     gfx::Display display = ScreenUtil::FindDisplayContainingPoint(root_point);
 
     gfx::Rect panel_bounds_in_screen = panel->GetBoundsInScreen();
     gfx::Point screen_bottom_right = gfx::Point(
         panel_bounds_in_screen.right(),
@@ skipping 709 matching lines @@
   // Hit test outside the left edge with a left-aligned shelf.
   touch.set_location(gfx::Point(bounds.x() - 1, bounds.y() + 5));
   target = targeter->FindTargetForEvent(root, &touch);
   EXPECT_NE(w.get(), target);
 }
 
 INSTANTIATE_TEST_CASE_P(LtrRtl, PanelLayoutManagerTextDirectionTest,
                         testing::Bool());
 
 }  // namespace ash