Add an extra guard to replaceDocument()

Source/core/loader/FrameLoader.h

Index: Source/core/loader/FrameLoader.h
diff --git a/Source/core/loader/FrameLoader.h b/Source/core/loader/FrameLoader.h
index 3c33573d801b2ea8a3feaf676c1596cd9d29122c..0f61d3b111d9ef1c3c76c5d855e2828eed623b02 100644
--- a/Source/core/loader/FrameLoader.h
+++ b/Source/core/loader/FrameLoader.h
@@ -102,6 +102,7 @@ public:
     bool closeURL();
     // FIXME: clear() is trying to do too many things. We should break it down into smaller functions.
     void clear();
+    void replaceDocument(const String& source, Document* ownerDocument);

[dglazkov, 2014/08/26 16:03:32]

If it only has one intended callsite, let's name it something specific, like
replaceDocumentWhileExecutingJavascriptURL?

 
     // Sets a timer to notify the client that the initial empty document has
     // been accessed, and thus it is no longer safe to show a provisional URL