Fix tiles bluriness regression in Chrome, ref #2078

dist/leaflet.css

@@ -42,10 +42,6 @@
 .leaflet-container img.leaflet-image-layer {
 	max-width: 15000px !important;
 	}
-/* Android chrome makes tiles disappear without this */
-.leaflet-tile-container img {
-	-webkit-backface-visibility: hidden;
-}
 .leaflet-tile {
 	filter: inherit;
 	visibility: hidden;

src/layer/tile/TileLayer.js

@@ -521,6 +521,9 @@ L.TileLayer = L.Class.extend({
 		if (L.Browser.ielt9 && this.options.opacity !== undefined) {
 			L.DomUtil.setOpacity(tile, this.options.opacity);
 		}
+		if (L.Browser.mobileWebkit3d) {
+			tile.style.webkitBackfaceVisibility = 'hidden';
+		}
 		return tile;
 	},