chore: kill ListWrapper.create() and .push().

These wrappers are not natively understood by
ts2dart. Removing them will improve Dart2JS
compilation due to fewer megamorphic calls to List
functions.

It also makes Angular code more succinct and
improves type safety in Angular due to better type
inference of the Array component type.

This change exposed several bugs in Angular.

modules/angular2/src/dom/generic_browser_adapter.ts

@@ -13,7 +13,7 @@ export class GenericBrowserDomAdapter extends DomAdapter {
   cssToRules(css: string): List<any> {
     var style = this.createStyleElement(css);
     this.appendChild(this.defaultDoc().head, style);
-    var rules = ListWrapper.create();
+    var rules = [];
     if (isPresent(style.sheet)) {
       // TODO(sorvell): Firefox throws when accessing the rules of a stylesheet
       // with an @import

modules/angular2/src/dom/parse5_adapter.ts

@@ -33,14 +33,14 @@ export class Parse5DomAdapter extends DomAdapter {
   query(selector) { throw _notImplemented('query'); }
   querySelector(el, selector: string) { return this.querySelectorAll(el, selector)[0]; }
   querySelectorAll(el, selector: string) {
-    var res = ListWrapper.create();
+    var res = [];
     var _recursive = (result, node, selector, matcher) => {
       var cNodes = node.childNodes;
       if (cNodes && cNodes.length > 0) {
         for (var i = 0; i < cNodes.length; i++) {
           var childNode = cNodes[i];
           if (this.elementMatches(childNode, selector, matcher)) {
-            ListWrapper.push(result, childNode);
+            result.push(childNode);
           }
           _recursive(result, childNode, selector, matcher);
         }
@@ -86,9 +86,9 @@ export class Parse5DomAdapter extends DomAdapter {
     }
     var listeners = StringMapWrapper.get(listenersMap, evt);
     if (isBlank(listeners)) {
-      listeners = ListWrapper.create();
+      listeners = [];
     }
-    ListWrapper.push(listeners, listener);
+    listeners.push(listener);
     StringMapWrapper.set(listenersMap, evt, listeners);
   }
   onAndCancel(el, evt, listener): Function {
@@ -287,7 +287,7 @@ export class Parse5DomAdapter extends DomAdapter {
     var classList = this.classList(element);
     var index = classList.indexOf(classname);
     if (index == -1) {
-      ListWrapper.push(classList, classname);
+      classList.push(classname);
       element.attribs["class"] = element.className = ListWrapper.join(classList, " ");
     }
   }
@@ -417,7 +417,7 @@ export class Parse5DomAdapter extends DomAdapter {
     }
   }
   _buildRules(parsedRules, css?) {
-    var rules = ListWrapper.create();
+    var rules = [];
     for (var i = 0; i < parsedRules.length; i++) {
       var parsedRule = parsedRules[i];
       var rule: StringMap<string, any> = StringMapWrapper.create();
@@ -448,13 +448,13 @@ export class Parse5DomAdapter extends DomAdapter {
           StringMapWrapper.set(rule, "cssRules", this._buildRules(parsedRule.rules));
         }
       }
-      ListWrapper.push(rules, rule);
+      rules.push(rule);
     }
     return rules;
   }
   cssToRules(css: string): List<any> {
     css = css.replace(/url\(\'(.+)\'\)/g, 'url($1)');
-    var rules = ListWrapper.create();
+    var rules = [];
     var parsedCSS = cssParse(css, {silent: true});
     if (parsedCSS.stylesheet && parsedCSS.stylesheet.rules) {
       rules = this._buildRules(parsedCSS.stylesheet.rules, css);