Prevent crash when resize is sent to a swapped out main frame

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 26c7ef258201a7ca9bb1c6f5842996d3027052a3..ebd6e72f373fe0164c743d448db9ba41c3501f0a 100644
--- a/content/renderer/render_view_impl.cc
+++ b/content/renderer/render_view_impl.cc
@@ -2680,7 +2680,8 @@ void RenderViewImpl::OnResize(const ResizeParams& params) {
   TRACE_EVENT0("renderer", "RenderViewImpl::OnResize");
   if (webview()) {
     webview()->hidePopups();
-    if (send_preferred_size_changes_) {
+    if (send_preferred_size_changes_ &&
+        webview()->mainFrame()->isWebLocalFrame()) {
       webview()->mainFrame()->setCanHaveScrollbars(
           ShouldDisplayScrollbars(params.new_size.width(),
                                   params.new_size.height()));