Revert "chore: Remove unnecessary calls to Parse5DomAdapter"

This reverts commit 387a90e546.

modules/@angular/compiler-cli/src/codegen.ts

@@ -4,6 +4,7 @@
  */
 import * as compiler from '@angular/compiler';
 import {ViewEncapsulation} from '@angular/core';
+import {Parse5DomAdapter} from '@angular/platform-server';
 import {AngularCompilerOptions} from '@angular/tsc-wrapped';
 import * as path from 'path';
 import * as ts from 'typescript';
@@ -105,6 +106,8 @@ export class CodeGenerator {
   }
 
   codegen(): Promise<any> {
+    Parse5DomAdapter.makeCurrent();
+
     let stylesheetPromises: Promise<any>[] = [];
     const generateOneFile = (absSourcePath: string) =>
         Promise.all(this.readComponents(absSourcePath))