Makes Panel related classes use ash/wm/common types

ash/wm/overview/window_selector_unittest.cc

Index: ash/wm/overview/window_selector_unittest.cc
diff --git a/ash/wm/overview/window_selector_unittest.cc b/ash/wm/overview/window_selector_unittest.cc
index 5593e08e5379a8970c7171f60496d34e6684eb60..714072df1b24720c171e207c7a98eda805532c8d 100644
--- a/ash/wm/overview/window_selector_unittest.cc
+++ b/ash/wm/overview/window_selector_unittest.cc
@@ -20,6 +20,7 @@
 #include "ash/test/shelf_view_test_api.h"
 #include "ash/test/shell_test_api.h"
 #include "ash/test/test_shelf_delegate.h"
+#include "ash/wm/aura/wm_window_aura.h"
 #include "ash/wm/common/wm_event.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/wm/mru_window_tracker.h"
@@ -1484,30 +1485,25 @@ TEST_F(WindowSelectorTest, SelectWindowWithReturnKey) {
 TEST_F(WindowSelectorTest, WindowOverviewHidesCalloutWidgets) {
   std::unique_ptr<aura::Window> panel1(
       CreatePanelWindow(gfx::Rect(0, 0, 100, 100)));
+  wm::WmWindow* wm_panel1 = wm::WmWindowAura::Get(panel1.get());
   std::unique_ptr<aura::Window> panel2(
       CreatePanelWindow(gfx::Rect(0, 0, 100, 100)));
-  PanelLayoutManager* panel_manager =
-        static_cast<PanelLayoutManager*>(panel1->parent()->layout_manager());
+  wm::WmWindow* wm_panel2 = wm::WmWindowAura::Get(panel2.get());
+  PanelLayoutManager* panel_manager = PanelLayoutManager::Get(wm_panel1);
 
   // By default, panel callout widgets are visible.
-  EXPECT_TRUE(
-      panel_manager->GetCalloutWidgetForPanel(panel1.get())->IsVisible());
-  EXPECT_TRUE(
-      panel_manager->GetCalloutWidgetForPanel(panel2.get())->IsVisible());
+  EXPECT_TRUE(panel_manager->GetCalloutWidgetForPanel(wm_panel1)->IsVisible());
+  EXPECT_TRUE(panel_manager->GetCalloutWidgetForPanel(wm_panel2)->IsVisible());
 
   // Toggling the overview should hide the callout widgets.
   ToggleOverview();
-  EXPECT_FALSE(
-      panel_manager->GetCalloutWidgetForPanel(panel1.get())->IsVisible());
-  EXPECT_FALSE(
-      panel_manager->GetCalloutWidgetForPanel(panel2.get())->IsVisible());
+  EXPECT_FALSE(panel_manager->GetCalloutWidgetForPanel(wm_panel1)->IsVisible());
+  EXPECT_FALSE(panel_manager->GetCalloutWidgetForPanel(wm_panel2)->IsVisible());
 
   // Ending the overview should show them again.
   ToggleOverview();
-  EXPECT_TRUE(
-      panel_manager->GetCalloutWidgetForPanel(panel1.get())->IsVisible());
-  EXPECT_TRUE(
-      panel_manager->GetCalloutWidgetForPanel(panel2.get())->IsVisible());
+  EXPECT_TRUE(panel_manager->GetCalloutWidgetForPanel(wm_panel1)->IsVisible());
+  EXPECT_TRUE(panel_manager->GetCalloutWidgetForPanel(wm_panel2)->IsVisible());
 }
 
 // Creates three windows and tests filtering them by title.