gl_unittests: on a core profile, use VAOs

ui/gl/gl_helper.h

Index: ui/gl/gl_helper.h
diff --git a/ui/gl/gl_helper.h b/ui/gl/gl_helper.h
index ed17bbd76bea45b6f4a2e16c73d83c747d62dad2..364e0dae3f48d9d689bf18ff8a294f35a854a4a4 100644
--- a/ui/gl/gl_helper.h
+++ b/ui/gl/gl_helper.h
@@ -34,6 +34,10 @@ class GL_EXPORT GLHelper {
 
   // Draws a quad to the currently bound frame buffer.
   static void DrawQuad(GLuint vertex_buffer);
+
+  // When using the desktop core profile we have to bind a VAO before
+  // calling glVertexAttribPointer.
+  static bool ShouldTestsUseVAOs();
 };
 
 }  // namespace gl