perf(compiler): introduce direct rendering

This allows to attach / detach embedded views and projected nodes
in a faster way.

modules/@angular/platform-browser/src/dom/dom_renderer.ts

@@ -9,7 +9,7 @@
 import {APP_ID, Inject, Injectable, RenderComponentType, Renderer, RootRenderer, ViewEncapsulation} from '@angular/core';
 
 import {isBlank, isPresent, stringify} from '../facade/lang';
-import {AnimationKeyframe, AnimationPlayer, AnimationStyles, RenderDebugInfo} from '../private_import_core';
+import {AnimationKeyframe, AnimationPlayer, AnimationStyles, DirectRenderer, RenderDebugInfo} from '../private_import_core';
 
 import {AnimationDriver} from './animation_driver';
 import {DOCUMENT} from './dom_tokens';
@@ -54,11 +54,21 @@ export class DomRootRenderer_ extends DomRootRenderer {
   }
 }
 
+export const DIRECT_DOM_RENDERER: DirectRenderer = {
+  remove(node: Text | Comment | Element) { node.remove();},
+  appendChild(node: Node, parent: Element) { parent.appendChild(node);},
+  insertBefore(node: Node, refNode: Node) { refNode.parentElement.insertBefore(node, refNode);},
+  nextSibling(node: Node) { return node.nextSibling;},
+  parentElement(node: Node): Element{return node.parentElement;}
+};
+
 export class DomRenderer implements Renderer {
   private _contentAttr: string;
   private _hostAttr: string;
   private _styles: string[];
 
+  directRenderer: DirectRenderer = DIRECT_DOM_RENDERER;
+
   constructor(
       private _rootRenderer: DomRootRenderer, private componentProto: RenderComponentType,
       private _animationDriver: AnimationDriver, styleShimId: string) {

modules/@angular/platform-browser/src/private_import_core.ts

@@ -10,6 +10,7 @@ import {__core_private__ as r} from '@angular/core';
 
 export type RenderDebugInfo = typeof r._RenderDebugInfo;
 export var RenderDebugInfo: typeof r.RenderDebugInfo = r.RenderDebugInfo;
+export type DirectRenderer = typeof r._DirectRenderer;
 
 export var ReflectionCapabilities: typeof r.ReflectionCapabilities = r.ReflectionCapabilities;