diff --git a/mozilla/docshell/base/nsWebShell.cpp b/mozilla/docshell/base/nsWebShell.cpp
index cf335ce593a..205db6987cd 100644
--- a/mozilla/docshell/base/nsWebShell.cpp
+++ b/mozilla/docshell/base/nsWebShell.cpp
@@ -199,6 +199,7 @@ public:
   NS_IMETHOD SetParent(nsIWebShell* aParent);
   NS_IMETHOD GetParent(nsIWebShell*& aParent);
   NS_IMETHOD GetParentEvenIfChrome(nsIWebShell*& aParent);
+  NS_IMETHOD GetReferrer(nsIURI **aReferrer);
   NS_IMETHOD GetChildCount(PRInt32& aResult);
   NS_IMETHOD AddChild(nsIWebShell* aChild);
   NS_IMETHOD RemoveChild(nsIWebShell* aChild);
@@ -1576,6 +1577,12 @@ nsWebShell::GetParentEvenIfChrome(nsIWebShell*& aParent)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsWebShell::GetReferrer(nsIURI **aReferrer)
+{
+  return NS_NewURI(aReferrer, mReferrer, nsnull);
+}
+
 NS_IMETHODIMP
 nsWebShell::GetChildCount(PRInt32& aResult)
 {
diff --git a/mozilla/webshell/public/nsIWebShell.h b/mozilla/webshell/public/nsIWebShell.h
index f38f1df3849..9ca0cf79f8c 100644
--- a/mozilla/webshell/public/nsIWebShell.h
+++ b/mozilla/webshell/public/nsIWebShell.h
@@ -260,6 +260,11 @@ public:
 	 */
 	NS_IMETHOD GetParentEvenIfChrome(nsIWebShell*& aParent) = 0;
 
+  /**
+   * Get the referrer of the link using this WebShell.
+   */
+  NS_IMETHOD GetReferrer(nsIURI **aReferrer) = 0;
+
   /**
    * Return the current number of WebShells which are immediate children 
    * of the current WebShell.
diff --git a/mozilla/webshell/src/nsWebShell.cpp b/mozilla/webshell/src/nsWebShell.cpp
index cf335ce593a..205db6987cd 100644
--- a/mozilla/webshell/src/nsWebShell.cpp
+++ b/mozilla/webshell/src/nsWebShell.cpp
@@ -199,6 +199,7 @@ public:
   NS_IMETHOD SetParent(nsIWebShell* aParent);
   NS_IMETHOD GetParent(nsIWebShell*& aParent);
   NS_IMETHOD GetParentEvenIfChrome(nsIWebShell*& aParent);
+  NS_IMETHOD GetReferrer(nsIURI **aReferrer);
   NS_IMETHOD GetChildCount(PRInt32& aResult);
   NS_IMETHOD AddChild(nsIWebShell* aChild);
   NS_IMETHOD RemoveChild(nsIWebShell* aChild);
@@ -1576,6 +1577,12 @@ nsWebShell::GetParentEvenIfChrome(nsIWebShell*& aParent)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsWebShell::GetReferrer(nsIURI **aReferrer)
+{
+  return NS_NewURI(aReferrer, mReferrer, nsnull);
+}
+
 NS_IMETHODIMP
 nsWebShell::GetChildCount(PRInt32& aResult)
 {