Add ol.source.Tile support for wrapping around the x-axis

src/ol/tilegrid/tilegrid.js

@@ -103,8 +103,7 @@ ol.tilegrid.TileGrid.tmpTileCoord_ = [0, 0, 0];
 
 /**
  * Returns the identity function. May be overridden in subclasses.
- * @param {{extent: (ol.Extent|undefined),
- *          wrapX: (boolean|undefined)}=} opt_options Options.
+ * @param {{extent: (ol.Extent|undefined)}=} opt_options Options.
  * @return {function(ol.TileCoord, ol.proj.Projection, ol.TileCoord=):
  *     ol.TileCoord} Tile coordinate transform.
  */

src/ol/tilegrid/xyztilegrid.js

@@ -47,7 +47,6 @@ ol.tilegrid.XYZ.prototype.createTileCoordTransform = function(opt_options) {
   var options = goog.isDef(opt_options) ? opt_options : {};
   var minZ = this.minZoom;
   var maxZ = this.maxZoom;
-  var wrapX = goog.isDef(options.wrapX) ? options.wrapX : true;
   /** @type {Array.<ol.TileRange>} */
   var tileRangeByZ = null;
   if (goog.isDef(options.extent)) {
@@ -75,11 +74,6 @@ ol.tilegrid.XYZ.prototype.createTileCoordTransform = function(opt_options) {
         }
         var n = Math.pow(2, z);
         var x = tileCoord[1];
-        if (wrapX) {
-          x = goog.math.modulo(x, n);
-        } else if (x < 0 || n <= x) {
-          return null;
-        }
         var y = tileCoord[2];
         if (y < -n || -1 < y) {
           return null;