move Layer.Grid.getGridBounds function into deprecated.js

lib/OpenLayers/Layer/Grid.js

@@ -559,23 +559,6 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
         } 
         OpenLayers.Layer.HTTPRequest.prototype.setTileSize.apply(this, [size]);
     },
-        
-    /**
-     * Method: getGridBounds
-     * Deprecated. This function will be removed in 3.0. Please use 
-     *     getTilesBounds() instead.
-     * 
-     * Returns:
-     * {<OpenLayers.Bounds>} A Bounds object representing the bounds of all the
-     * currently loaded tiles (including those partially or not at all seen 
-     * onscreen)
-     */
-    getGridBounds: function() {
-        var msg = "The getGridBounds() function is deprecated. It will be " +
-                  "removed in 3.0. Please use getTilesBounds() instead.";
-        OpenLayers.Console.warn(msg);
-        return this.getTilesBounds();
-    },
 
     /**
      * APIMethod: getTilesBounds

lib/deprecated.js

@@ -1805,6 +1805,30 @@ OpenLayers.Control.MouseToolbar = OpenLayers.Class(
 OpenLayers.Control.MouseToolbar.X = 6;
 OpenLayers.Control.MouseToolbar.Y = 300;
 
+/**
+ * Class: OpenLayers.Layer.Grid
+ */
+
+OpenLayers.Util.extend(OpenLayers.Layer.Grid.prototype, {
+
+    /**
+     * Method: getGridBounds
+     * Deprecated. This function will be removed in 3.0. Please use 
+     *     getTilesBounds() instead.
+     * 
+     * Returns:
+     * {<OpenLayers.Bounds>} A Bounds object representing the bounds of all the
+     * currently loaded tiles (including those partially or not at all seen 
+     * onscreen)
+     */
+    getGridBounds: function() {
+        var msg = "The getGridBounds() function is deprecated. It will be " +
+                  "removed in 3.0. Please use getTilesBounds() instead.";
+        OpenLayers.Console.warn(msg);
+        return this.getTilesBounds();
+    }
+});
+
 /**
  * Class: OpenLayers.Format.XML
  */

tests/Layer/Grid.html

@@ -94,7 +94,7 @@
 
 
     function test_Layer_Grid_getTilesBounds(t) {
-        t.plan( 4 );
+        t.plan(3);
 
         layer = new OpenLayers.Layer.WMS(name, url, params);
 
@@ -110,10 +110,6 @@
         
         t.ok( bounds.equals(testBounds), "getTilesBounds() returns correct bounds");
         
-        var bounds = layer.getGridBounds();
-        
-        t.ok( bounds.equals(testBounds), "getGridBounds() wrapper works the same as getTilesBounds.");
-
     //no tiles
         layer.grid = [];
         bounds = layer.getTilesBounds();