diff --git a/mozilla/content/base/public/nsISelectionController.idl b/mozilla/content/base/public/nsISelectionController.idl
index 9dc4201a711..610bee20f54 100644
--- a/mozilla/content/base/public/nsISelectionController.idl
+++ b/mozilla/content/base/public/nsISelectionController.idl
@@ -94,6 +94,15 @@ interface nsISelectionController : nsISupports
    */
     void scrollPage(in boolean aForward);
 
+  /** ScrolLine will scroll line up or down dependent on the boolean
+   *  @param aForward scroll forward or backwards in selection
+   */
+	void scrollLine(in boolean aForward);
+
+  /** ScrolHorizontal will scroll left or right dependent on the boolean
+   *  @param aLeft if true will scroll left. if not will scroll right.
+   */
+	void scrollHorizontal(in boolean aLeft);
   /** SelectAll will select the whole page
    */
     void selectAll();
diff --git a/mozilla/layout/base/public/nsISelectionController.idl b/mozilla/layout/base/public/nsISelectionController.idl
index 9dc4201a711..610bee20f54 100644
--- a/mozilla/layout/base/public/nsISelectionController.idl
+++ b/mozilla/layout/base/public/nsISelectionController.idl
@@ -94,6 +94,15 @@ interface nsISelectionController : nsISupports
    */
     void scrollPage(in boolean aForward);
 
+  /** ScrolLine will scroll line up or down dependent on the boolean
+   *  @param aForward scroll forward or backwards in selection
+   */
+	void scrollLine(in boolean aForward);
+
+  /** ScrolHorizontal will scroll left or right dependent on the boolean
+   *  @param aLeft if true will scroll left. if not will scroll right.
+   */
+	void scrollHorizontal(in boolean aLeft);
   /** SelectAll will select the whole page
    */
     void selectAll();