fix(ShadowDom): fix emulation integration spec to test all 3 strategies

fixes #2546

modules/angular2/test/render/dom/shadow_dom_emulation_integration_spec.ts

@@ -60,10 +60,9 @@ export function main() {
     }
 
     StringMapWrapper.forEach(strategies, (strategyBinding, name) => {
-
+      describe(`${name} shadow dom strategy`, () => {
         beforeEachBindings(() => { return [strategyBinding, DomTestbed]; });
 
-      describe(`${name} shadow dom strategy`, () => {
         // GH-2095 - https://github.com/angular/angular/issues/2095
         it('should support text nodes after content tags',
            inject([DomTestbed, AsyncTestCompleter], (tb, async) => {