Trying to activate a window in a workspace other than the current is ignored while a system modal d…

ash/wm/workspace_controller.h

Index: ash/wm/workspace_controller.h
diff --git a/ash/wm/workspace_controller.h b/ash/wm/workspace_controller.h
index 310c36eda69b7b9703c0e35001e05897819a7534..80b34d795d7dcbf9f9c4b2b00589f255fc3d599a 100644
--- a/ash/wm/workspace_controller.h
+++ b/ash/wm/workspace_controller.h
@@ -51,6 +51,8 @@ class ASH_EXPORT WorkspaceController
   // aura::client::ActivationChangeObserver overrides:
   virtual void OnWindowActivated(aura::Window* gained_active,
                                  aura::Window* lost_active) OVERRIDE;
+  virtual void OnWindowActivationRequestCompleted(
+      aura::Window* request_active, aura::Window* actual_active) OVERRIDE;
 
  private:
   friend class WorkspaceControllerTestHelper;