refactor(ListWrapper): drop forEach and removeLast

Closes #4584

modules/angular2/src/core/compiler/selector.ts

@@ -139,8 +139,7 @@ export class CssSelector {
         res += ']';
       }
     }
-    ListWrapper.forEach(this.notSelectors,
-                        (notSelector) => { res += ":not(" + notSelector.toString() + ")"; });
+    this.notSelectors.forEach(notSelector => res += `:not(${notSelector})`);
     return res;
   }
 }

modules/angular2/src/core/compiler/url_resolver.ts

@@ -213,7 +213,7 @@ function _removeDotSegments(path: string): string {
   var trailingSlash = path[path.length - 1] === '/' ? '/' : '';
   var segments = path.split('/');
 
-  var out = [];
+  var out: string[] = [];
   var up = 0;
   for (var pos = 0; pos < segments.length; pos++) {
     var segment = segments[pos];
@@ -223,7 +223,7 @@ function _removeDotSegments(path: string): string {
         break;
       case '..':
         if (out.length > 0) {
-          ListWrapper.removeAt(out, out.length - 1);
+          out.pop();
         } else {
           up++;
         }
@@ -235,7 +235,7 @@ function _removeDotSegments(path: string): string {
 
   if (leadingSlash == '') {
     while (up-- > 0) {
-      ListWrapper.insert(out, 0, '..');
+      out.unshift('..');
     }
 
     if (out.length === 0) out.push('.');

modules/angular2/src/core/compiler/xhr_mock.ts

@@ -28,8 +28,7 @@ export class MockXHR extends XHR {
     }
 
     do {
-      var request = ListWrapper.removeAt(this._requests, 0);
-      this._processRequest(request);
+      this._processRequest(this._requests.shift());
     } while (this._requests.length > 0);
 
     this.verifyNoOustandingExpectations();