fix(compiler): keep `DOM.hasProperty` in sync between browser and transformer.

Right now, we always return true until
we have property schema support (#2014).

Fixes #2984
Closes #2981

modules/angular2/src/dom/browser_adapter.dart

@@ -98,17 +98,19 @@ final _keyCodeToKeyMap = const {
 class BrowserDomAdapter extends GenericBrowserDomAdapter {
   js.JsFunction _setProperty;
   js.JsFunction _getProperty;
-  js.JsFunction _hasProperty;
   BrowserDomAdapter() {
-    _setProperty = js.context.callMethod('eval', ['(function(el, prop, value) { el[prop] = value; })']);
+    _setProperty = js.context.callMethod('eval', ['(function(el, prop, value) { if (prop in el) el[prop] = value; })']);
     _getProperty = js.context.callMethod('eval', ['(function(el, prop) { return el[prop]; })']);
-    _hasProperty = js.context.callMethod('eval', ['(function(el, prop) { return prop in el; })']);
   }
   static void makeCurrent() {
     setRootDomAdapter(new BrowserDomAdapter());
   }
-  bool hasProperty(Element element, String name) =>
-      _hasProperty.apply([element, name]);
+  bool hasProperty(Element element, String name) {
+    // Always return true as the serverside version html_adapter.dart does so.
+    // TODO: change this once we have schema support.
+    // Note: This nees to kept in sync with html_adapter.dart!
+    return true;
+  }
 
   void setProperty(Element element, String name, Object value) =>
       _setProperty.apply([element, name, value]);

modules/angular2/src/dom/html_adapter.dart

@@ -11,7 +11,9 @@ class Html5LibDomAdapter implements DomAdapter {
   }
 
   hasProperty(element, String name) {
-    // This is needed for serverside compile to generate the right getters/setters...
+    // This is needed for serverside compile to generate the right getters/setters.
+    // TODO: change this once we have property schema support.
+    // Attention: Keep this in sync with browser_adapter.dart! 
     return true;
   }
 

modules/angular2/test/core/compiler/integration_spec.ts

@@ -1245,6 +1245,7 @@ export function main() {
                     });
               }));
 
+    if (!IS_DARTIUM) {
       describe('Missing property bindings', () => {
         it('should throw on bindings to unknown properties',
            inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
@@ -1270,6 +1271,7 @@ export function main() {
                  .then((val) => { async.done(); });
            }));
       });      
+    }
 
     // Disabled until a solution is found, refs:
     // - https://github.com/angular/angular/issues/776

modules/angular2/test/render/dom/view/proto_view_builder_spec.ts

@@ -22,6 +22,7 @@ export function main() {
     var builder;
     beforeEach(() => { builder = new ProtoViewBuilder(el('<div/>'), ViewType.EMBEDDED); });
 
+    if (!IS_DARTIUM) {
       describe('verification of properties', () => {
   
         it('should throw for unknown properties', () => {
@@ -54,6 +55,7 @@ export function main() {
         });
   
       });      
+    }
 
     describe('property normalization', () => {
       it('should normalize "innerHtml" to "innerHTML"', () => {