Changes top level window creation to include window state in callback

components/mus/public/cpp/lib/window_tree_client_impl.h

Index: components/mus/public/cpp/lib/window_tree_client_impl.h
diff --git a/components/mus/public/cpp/lib/window_tree_client_impl.h b/components/mus/public/cpp/lib/window_tree_client_impl.h
index 42bf0cbdfb8b7c19cbd56b0006560c31ea6b274c..73df76070cdd5859280117085e068a820c8bbc51 100644
--- a/components/mus/public/cpp/lib/window_tree_client_impl.h
+++ b/components/mus/public/cpp/lib/window_tree_client_impl.h
@@ -123,6 +123,7 @@ class WindowTreeClientImpl : public WindowTreeConnection,
 
   using IdToWindowMap = std::map<Id, Window*>;
 
+  // TODO(sky): this assumes change_ids never wrap, which is a bad assumption.
   using InFlightMap = std::map<uint32_t, scoped_ptr<InFlightChange>>;
 
   // Returns the oldest InFlightChange that matches |change|.
@@ -168,6 +169,8 @@ class WindowTreeClientImpl : public WindowTreeConnection,
                uint32_t access_policy) override;
   void OnEmbeddedAppDisconnected(Id window_id) override;
   void OnUnembed(Id window_id) override;
+  void OnTopLevelCreated(uint32_t change_id,
+                         mojom::WindowDataPtr data) override;
   void OnWindowBoundsChanged(Id window_id,
                              mojo::RectPtr old_bounds,
                              mojo::RectPtr new_bounds) override;