mus: Implement Window Server Capture

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

Index: components/mus/public/cpp/lib/view_tree_client_impl.h
diff --git a/components/mus/public/cpp/lib/view_tree_client_impl.h b/components/mus/public/cpp/lib/view_tree_client_impl.h
index 95e55938a88c6837fe7d0f3bc24555a959cc0f02..cb70a53d97c32eb8c3cddae7c84ed1953d91523e 100644
--- a/components/mus/public/cpp/lib/view_tree_client_impl.h
+++ b/components/mus/public/cpp/lib/view_tree_client_impl.h
@@ -42,6 +42,7 @@ class ViewTreeClientImpl : public ViewTreeConnection,
   bool OwnsView(Id id) const;
 
   void SetBounds(Id view_id, const mojo::Rect& bounds);
+  void SetCapture(Id view_id);
   void SetFocus(Id view_id);
   void SetVisible(Id view_id, bool visible);
   void SetProperty(Id view_id,
@@ -99,6 +100,7 @@ class ViewTreeClientImpl : public ViewTreeConnection,
                uint32_t access_policy) override;
   void OnEmbeddedAppDisconnected(Id view_id) override;
   void OnUnembed() override;
+  void OnLostCapture(Id view_id) override;
   void OnViewBoundsChanged(Id view_id,
                            mojo::RectPtr old_bounds,
                            mojo::RectPtr new_bounds) override;