Index: extensions/renderer/script_context.cc |
diff --git a/extensions/renderer/script_context.cc b/extensions/renderer/script_context.cc |
index 0f7a77c553f2916de8e59914f6aa3c4e8730a2ea..20109a41fef5b126ef73b70e40a74f60835809d0 100644 |
--- a/extensions/renderer/script_context.cc |
+++ b/extensions/renderer/script_context.cc |
@@ -188,10 +188,10 @@ GURL ScriptContext::GetEffectiveDocumentURL(const blink::WebFrame* frame, |
const blink::WebFrame* parent = frame; |
do { |
parent = parent->parent() ? parent->parent() : parent->opener(); |
- } while (parent != NULL && |
+ } while (parent != NULL && !parent->document().isNull() && |
GURL(parent->document().url()).SchemeIs(url::kAboutScheme)); |
- if (parent) { |
+ if (parent && !parent->document().isNull()) { |
// Only return the parent URL if the frame can access it. |
const blink::WebDocument& parent_document = parent->document(); |
if (frame->document().securityOrigin().canAccess( |