Chrome/Mac layout error on Google Docs Demo page

content/renderer/render_view_impl.cc

Index: content/renderer/render_view_impl.cc
diff --git a/content/renderer/render_view_impl.cc b/content/renderer/render_view_impl.cc
index e3833d4319ab76a6500e27ce9e2f7aac4f149430..5660528fae8a19cae4cc8f47cdb76ca2bec3a4a8 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -2871,6 +2871,9 @@ void RenderViewImpl::CheckPreferredSize() {
   size.set_width(static_cast<int>(size.width() * zoom_factor));
   size.set_height(static_cast<int>(size.height() * zoom_factor));
 
+  if (!size.height())
+    size.set_height(preferred_size_.height());
+
   if (size == preferred_size_)
     return;