Rename cookieURL to inheritedURL and add inheritedURL() to WebDocument

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index 0bff7aab9e1ac597a8c1d1727bd59ab171956267..d59964ee334f0f2f067d801721a5609a849e96e7 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -756,18 +756,21 @@ public:
 
     String lastModified() const;
 
-    // The cookieURL is used to query the cookie database for this document's
+    // Returns the document's (inherited) URL. Should only be used for decisions that
+    // are solely based on the document's URL. For anything security-related, use
+    // securityOrigin() instead.
+    // inheritedURL is also used to query the cookie database for the document's
     // cookies. For example, if the cookie URL is http://example.com, we'll
     // use the non-Secure cookies for example.com when computing
     // document.cookie.
     //
-    // Q: How is the cookieURL different from the document's URL?
+    // Q: How is the inheritedURL different from the document's URL?
     // A: The two URLs are the same almost all the time.  However, if one
     //    document inherits the security context of another document, it
-    //    inherits its cookieURL but not its URL.
+    //    inherits its inheritedURL but not its URL.
     //
-    const KURL& cookieURL() const { return m_cookieURL; }
-    void setCookieURL(const KURL& url) { m_cookieURL = url; }
+    const KURL& inheritedURL() const { return m_inheritedURL; }
+    void setInheritedURL(const KURL& url) { m_inheritedURL = url; }
 
     const KURL& firstPartyForCookies() const;
 
@@ -1187,7 +1190,7 @@ private:
     KURL m_baseURL; // Node.baseURI: The URL to use when resolving relative URLs.
     KURL m_baseURLOverride; // An alternative base URL that takes precedence over m_baseURL (but not m_baseElementURL).
     KURL m_baseElementURL; // The URL set by the <base> element.
-    KURL m_cookieURL; // The URL to use for cookie access.
+    KURL m_inheritedURL; // Same as m_url, unless the document inherits its security context from another document.
 
     AtomicString m_baseTarget;