Revert of Set default document urls to 'about:blank'.

third_party/WebKit/Source/core/dom/Document.h

Index: third_party/WebKit/Source/core/dom/Document.h
diff --git a/third_party/WebKit/Source/core/dom/Document.h b/third_party/WebKit/Source/core/dom/Document.h
index a96d14e8b2663a4cc816efcef9e84012ca6c020c..83ac39074f9b1e2d498b3f827d279ed4c99de0c0 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -593,13 +593,8 @@
 
   bool wellFormed() const { return m_wellFormed; }
 
-  // Return the document URL, or an empty URL if it's unavailable.
-  // This is not an implementation of web-exposed Document.prototype.URL.
   const KURL& url() const { return m_url; }
   void setURL(const KURL&);
-
-  // Bind the url to document.url, if unavailable bind to about:blank.
-  KURL urlForBinding();
 
   // To understand how these concepts relate to one another, please see the
   // comments surrounding their declaration.