Import latest changes

src/Layout-test-utils.h

@@ -6,3 +6,5 @@
 
 void test(const char *name, css_node_t *style, css_node_t *expected_layout);
 css_dim_t measure(void *context, float width);
+void init_css_node_children(css_node_t *node, int children_count);
+css_node_t *new_test_css_node(void);