JDK 9 RFR of JDK-8055059: JDK9b22 public API exposes package private classes

[Joe Darcy]

Hello,

Please review my proposed changes to address:
    JDK-8055059: JDK9b22 public API exposes package private classes
    http://cr.openjdk.java.net/~darcy/8055059.0/

Bug JDK-8055059 that the generification of swing added package-private 
types to the signatures of several protected methods. The solution is to 
the make the formerly package-private types also be protected.

Patch below.

Thanks,

-Joe

--- old/src/share/classes/javax/swing/text/GapContent.java 2014-08-18 
18:27:50.000000000 -0700
+++ new/src/share/classes/javax/swing/text/GapContent.java 2014-08-18 
18:27:49.000000000 -0700
@@ -826,7 +826,7 @@
      * Used to hold a reference to a Mark that is being reset as the
      * result of removing from the content.
      */
-    final class UndoPosRef {
+    protected final class UndoPosRef {
         UndoPosRef(MarkData rec) {
             this.rec = rec;
             this.undoLocation = rec.getOffset();
@@ -839,7 +839,7 @@
          * @param endOffset end location of inserted string.
          * @param g1 resulting end of gap.
          */
-        protected void resetLocation(int endOffset, int g1) {
+        void resetLocation(int endOffset, int g1) {
             if (undoLocation != endOffset) {
                 this.rec.index = undoLocation;
             }
@@ -849,9 +849,9 @@
         }

         /** Previous Offset of rec. */
-        protected int undoLocation;
+        private int undoLocation;
         /** Mark to reset offset. */
-        protected MarkData rec;
+        private MarkData rec;
     } // End of GapContent.UndoPosRef


--- old/src/share/classes/javax/swing/text/StringContent.java 2014-08-18 
18:27:50.000000000 -0700
+++ new/src/share/classes/javax/swing/text/StringContent.java 2014-08-18 
18:27:50.000000000 -0700
@@ -366,7 +366,7 @@
      * Used to hold a reference to a Position that is being reset as the
      * result of removing from the content.
      */
-    final class UndoPosRef {
+    protected final class UndoPosRef {
         UndoPosRef(PosRec rec) {
             this.rec = rec;
             this.undoLocation = rec.offset;
@@ -376,14 +376,14 @@
          * Resets the location of the Position to the offset when the
          * receiver was instantiated.
          */
-        protected void resetLocation() {
+        void resetLocation() {
             rec.offset = undoLocation;
         }

         /** Location to reset to when resetLocatino is invoked. */
-        protected int undoLocation;
+        private int undoLocation;
         /** Position to reset offset. */
-        protected PosRec rec;
+        private PosRec rec;
     }

     /**