diff --git a/mozilla/xpcom/ds/nsIStringService.idl b/mozilla/xpcom/ds/nsIStringService.idl
index 0acb4bee1c0..5eae7e52043 100644
--- a/mozilla/xpcom/ds/nsIStringService.idl
+++ b/mozilla/xpcom/ds/nsIStringService.idl
@@ -51,6 +51,8 @@ interface nsIStringService : nsISupports
 {
   /**
    * Creates an nsAString from a |PRUnichar| buffer and length.
+   *
+   * Must be destroyed by deleteAString();
    * 
    * @param aString : A unicode string assigned to the new nsAString
    * @param aLength : The length of the string to be assigned to the new 
@@ -62,6 +64,8 @@ interface nsIStringService : nsISupports
   /**
    * Creates an nsAString from a |char| buffer and lenth.
    * 
+   * Must be destroyed by deleteACString();
+   *
    * @param aString : A string assigned to the new nsACString
    * @param aLength : The length of the string to be assigned to the new 
    *                  nsACString
@@ -69,6 +73,24 @@ interface nsIStringService : nsISupports
 
   nsACString createACString(in string aString, in long aLength); 
 
+
+
+  /**
+   * Frees memory associated with the |nsAString|.  After calling this method,
+   * the |aString| is no longer valid.
+   *
+   * @param aString : The |nsAString| object.
+   */
+  void deleteAString(in nsAString aString);
+
+  /**
+   * Frees memory associated with the |nsACString|.  After calling this method,
+   * the |aString| is no longer valid.
+   *
+   * @param aString : The |nsACString| object.
+   */
+  void deleteACString(in nsACString aString);
+
   /**
    * Returns a new |PRUnichar| buffer containing the bytes of |aString|.  This new 
    * buffer may contain embedded null characters.  The length of this new buffer
diff --git a/mozilla/xpcom/ds/nsStringService.cpp b/mozilla/xpcom/ds/nsStringService.cpp
index 176b82614ef..b40a546acac 100644
--- a/mozilla/xpcom/ds/nsStringService.cpp
+++ b/mozilla/xpcom/ds/nsStringService.cpp
@@ -78,6 +78,34 @@ nsStringService::CreateACString(const char *aString, PRInt32 aLength, nsACString
   return NS_OK;
 }
 
+NS_IMETHODIMP 
+nsStringService::DeleteAString(nsAString * aString)
+{
+  delete aString;
+  return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsStringService::DeleteACString(nsACString * aString)
+{
+  delete aString;
+  return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsStringService::DeleteAString(nsAString * aString)
+{
+  delete aString;
+  return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsStringService::DeleteACString(nsACString * aString)
+{
+  delete aString;
+  return NS_OK;
+}
+
 NS_IMETHODIMP 
 nsStringService::GetString(const nsACString & aString, char **_retval)
 {