fix(compiler): support events on a template element that are consumed via a direct expression

Closes #4883

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

@@ -58,6 +58,7 @@ class ProtoViewVisitor implements TemplateAstVisitor {
 
   visitEmbeddedTemplate(ast: EmbeddedTemplateAst, context: any): any {
     this.boundElementCount++;
+    templateVisitAll(this, ast.outputs);
     for (var i = 0; i < ast.directives.length; i++) {
       ast.directives[i].visit(this, i);
     }

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

@@ -77,7 +77,7 @@ export class ElementAst implements TemplateAst {
 }
 
 export class EmbeddedTemplateAst implements TemplateAst {
-  constructor(public attrs: AttrAst[], public vars: VariableAst[],
+  constructor(public attrs: AttrAst[], public outputs: BoundEventAst[], public vars: VariableAst[],
               public directives: DirectiveAst[], public children: TemplateAst[],
               public ngContentIndex: number, public sourceInfo: string) {}
   visit(visitor: TemplateAstVisitor, context: any): any {

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

@@ -223,7 +223,7 @@ class TemplateParseVisitor implements HtmlAstVisitor {
       this._assertAllEventsPublishedByDirectives(directives, events, element.sourceInfo);
       this._assertNoComponentsNorElementBindingsOnTemplate(directives, elementProps,
                                                            element.sourceInfo);
-      parsedElement = new EmbeddedTemplateAst(attrs, vars, directives, children,
+      parsedElement = new EmbeddedTemplateAst(attrs, events, vars, directives, children,
                                               elementNgContentIndex, element.sourceInfo);
     } else {
       this._assertOnlyOneComponent(directives, element.sourceInfo);
@@ -241,9 +241,9 @@ class TemplateParseVisitor implements HtmlAstVisitor {
           element.name, templateElementOrDirectiveProps, templateDirectives);
       this._assertNoComponentsNorElementBindingsOnTemplate(templateDirectives, templateElementProps,
                                                            element.sourceInfo);
-      parsedElement = new EmbeddedTemplateAst([], templateVars, templateDirectives, [parsedElement],
-                                              component.findNgContentIndex(templateCssSelector),
-                                              element.sourceInfo);
+      parsedElement = new EmbeddedTemplateAst(
+          [], [], templateVars, templateDirectives, [parsedElement],
+          component.findNgContentIndex(templateCssSelector), element.sourceInfo);
     }
     return parsedElement;
   }