Merge pull request #47 from amirebrahimi/master

Fix for mobile Safari's ReferenceError

Author: mrdoob

build/stats.min.js

@@ -4,7 +4,7 @@
 
 var Stats = function () {
 
-	var now = ( performance && performance.now ) ? performance.now.bind( performance ) : Date.now;
+	var now = ( self.performance && self.performance.now ) ? self.performance.now.bind( performance ) : Date.now;
 
 	var startTime = now(), prevTime = startTime;
 	var frames = 0, mode = 0;
@@ -92,7 +92,7 @@ var Stats = function () {
 
 	// MEM
 
-	if ( performance && performance.memory ) {
+	if ( self.performance && self.performance.memory ) {
 
 		var mem = 0, memMin = Infinity, memMax = 0;
 
@@ -147,7 +147,7 @@ var Stats = function () {
 				prevTime = time;
 				frames = 0;
 
-				if ( mem !== undefined ) {
+				if ( mem !== undefined && self.performance ) {
 
 					var heapSize = performance.memory.usedJSHeapSize;
 					var heapSizeLimit = performance.memory.jsHeapSizeLimit;