Converts overview to use common ash types

ash/wm/aura/wm_globals_aura.h

Index: ash/wm/aura/wm_globals_aura.h
diff --git a/ash/wm/aura/wm_globals_aura.h b/ash/wm/aura/wm_globals_aura.h
index 547c5662d5d883e16d45d71c5be29dbe5681fd6c..5e1890947a0df21343e1c61f9d6e1196dbc072fd 100644
--- a/ash/wm/aura/wm_globals_aura.h
+++ b/ash/wm/aura/wm_globals_aura.h
@@ -32,8 +32,10 @@ class ASH_EXPORT WmGlobalsAura : public WmGlobals,
   // WmGlobals:
   WmWindow* GetFocusedWindow() override;
   WmWindow* GetActiveWindow() override;
+  WmWindow* GetPrimaryRootWindow() override;

[James Cook, 2016/05/27 00:02:51]

Heh, I could have used this method in the CL I just sent you. :-)

   WmWindow* GetRootWindowForDisplayId(int64_t display_id) override;
   WmWindow* GetRootWindowForNewWindows() override;
+  std::vector<WmWindow*> GetMruWindowList() override;
   std::vector<WmWindow*> GetMruWindowListIgnoreModals() override;
   bool IsForceMaximizeOnFirstRun() override;
   bool IsUserSessionBlocked() override;
@@ -59,6 +61,8 @@ class ASH_EXPORT WmGlobalsAura : public WmGlobals,
   void OnWindowActivated(ActivationReason reason,
                          aura::Window* gained_active,
                          aura::Window* lost_active) override;
+  void OnAttemptToReactivateWindow(aura::Window* request_active,
+                                   aura::Window* actual_active) override;
 
   // WindowTreeHostManager::Observer:
   void OnDisplayConfigurationChanging() override;