Remove ol.source.TileSource.useLowResolutionTiles

src/ol/renderer/canvas/canvastilelayerrenderer.js

@@ -246,7 +246,6 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
   }
 
   this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
-  tileSource.useLowResolutionTiles(z, extent, tileGrid);
   this.scheduleExpireCache(frameState, tileSource);
 
   var transform = this.transform_;

src/ol/renderer/dom/domtilelayerrenderer.js

@@ -224,7 +224,6 @@ ol.renderer.dom.TileLayer.prototype.renderFrame =
   }
 
   this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
-  tileSource.useLowResolutionTiles(z, extent, tileGrid);
   this.scheduleExpireCache(frameState, tileSource);
 
 };

src/ol/renderer/webgl/webgltilelayerrenderer.js

@@ -466,7 +466,6 @@ ol.renderer.webgl.TileLayer.prototype.renderFrame =
   }
 
   this.updateUsedTiles(frameState.usedTiles, tileSource, z, tileRange);
-  tileSource.useLowResolutionTiles(z, extent, tileGrid);
   this.scheduleExpireCache(frameState, tileSource);
 
   goog.vec.Mat4.makeIdentity(this.texCoordMatrix_);

src/ol/source/tilesource.js

@@ -138,26 +138,6 @@ ol.source.TileSource.prototype.getTileGrid = function() {
 };
 
 
-/**
- * @param {number} z Z.
- * @param {ol.Extent} extent Extent.
- * @param {ol.tilegrid.TileGrid} tileGrid Tile grid.
- */
-ol.source.TileSource.prototype.useLowResolutionTiles =
-    function(z, extent, tileGrid) {
-  var tileRange, x, y, zKey;
-  // FIXME this should loop up to tileGrid's minZ when implemented
-  for (; z >= 0; --z) {
-    tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
-    for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
-      for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
-        this.useTile(z + '/' + x + '/' + y);
-      }
-    }
-  }
-};
-
-
 /**
  * Marks a tile coord as being used, without triggering a load.
  * @param {string} tileCoordKey Tile coordinate key.