Use ExecuteJavascriptInWebFrameNotifyResult to return results even in error condition

content/renderer/render_view.cc

Index: content/renderer/render_view.cc
diff --git a/content/renderer/render_view.cc b/content/renderer/render_view.cc
index 2def6db25e21015eacc0404d9c62a793d4ac0bcf..fc83a1daef2e9c2a2da665225f231880f3672ff5 100644
--- a/content/renderer/render_view.cc
+++ b/content/renderer/render_view.cc
@@ -3279,7 +3279,7 @@ void RenderView::EvaluateScript(const string16& frame_xpath,
     result = web_frame->executeScriptAndReturnValue(WebScriptSource(script));
   if (notify_result) {
     ListValue list;
-    if (web_frame) {
+    if (!result.IsEmpty() && web_frame) {
       v8::HandleScope handle_scope;
       v8::Local<v8::Context> context = web_frame->mainWorldScriptContext();
       v8::Context::Scope context_scope(context);