Add projection parameter to ol.source.Tile#expireCache and #useTile

This is required to be able to determine which cache the xyz coordinates
refer to (in case we have more caches).

src/ol/renderer/layerrenderer.js

@@ -194,7 +194,8 @@ ol.renderer.Layer.prototype.scheduleExpireCache =
              */
             function(tileSource, map, frameState) {
               var tileSourceKey = goog.getUid(tileSource).toString();
-              tileSource.expireCache(frameState.usedTiles[tileSourceKey]);
+              tileSource.expireCache(frameState.viewState.projection,
+                                     frameState.usedTiles[tileSourceKey]);
             }, tileSource));
   }
 };
@@ -327,7 +328,7 @@ ol.renderer.Layer.prototype.manageTilePyramid = function(
             opt_tileCallback.call(opt_this, tile);
           }
         } else {
-          tileSource.useTile(z, x, y);
+          tileSource.useTile(z, x, y, projection);
         }
       }
     }