Replace the GURL referrer field of OpenURLParams with a content::Referrer

content/browser/tab_contents/tab_contents_observer.cc

Index: content/browser/tab_contents/tab_contents_observer.cc
diff --git a/content/browser/tab_contents/tab_contents_observer.cc b/content/browser/tab_contents/tab_contents_observer.cc
index b9ad17dfd64f76499e022b73ec7d607b667e22bc..1ffbf5a6420bd8a30c1e7904903b3832a252584f 100644
--- a/content/browser/tab_contents/tab_contents_observer.cc
+++ b/content/browser/tab_contents/tab_contents_observer.cc
@@ -101,7 +101,7 @@ void TabContentsObserver::StopNavigation() {
 }
 
 void TabContentsObserver::DidOpenURL(const GURL& url,
-                                     const GURL& referrer,
+                                     const content::Referrer& referrer,
                                      WindowOpenDisposition disposition,
                                      content::PageTransition transition) {
 }
@@ -109,7 +109,7 @@ void TabContentsObserver::DidOpenURL(const GURL& url,
 void TabContentsObserver::DidOpenRequestedURL(
     TabContents* new_contents,
     const GURL& url,
-    const GURL& referrer,
+    const content::Referrer& referrer,
     WindowOpenDisposition disposition,
     content::PageTransition transition,
     int64 source_frame_id) {