refactor(compiler): add createAotCompiler factory

Also adds 2 more methods to the `AotCompilerHost`:
- `loadResource`
- `resolveFileToImport`

modules/@angular/compiler/test/aot/static_reflector_spec.ts

@@ -511,6 +511,12 @@ class MockAotCompilerHost implements AotCompilerHost {
 
   constructor() {}
 
+  loadResource(filePath: string): Promise<string> { throw new Error('Should not be called!'); }
+
+  resolveFileToImport(importedFilePath: string, containingFilePath: string): string {
+    throw new Error('Should not be called!');
+  }
+
   // In tests, assume that symbols are not re-exported
   resolveImportToFile(modulePath: string, containingFile?: string): string {
     function splitPath(path: string): string[] { return path.split(/\/|\\/g); }

modules/@angular/compiler/test/output/output_emitter_util.ts

@@ -9,7 +9,7 @@
 import {CompileIdentifierMetadata} from '@angular/compiler/src/compile_metadata';
 import {assetUrl} from '@angular/compiler/src/identifiers';
 import * as o from '@angular/compiler/src/output/output_ast';
-import {ImportGenerator} from '@angular/compiler/src/output/path_util';
+import {ImportResolver} from '@angular/compiler/src/output/path_util';
 import {EventEmitter} from '@angular/core';
 import {BaseError} from '@angular/core/src/facade/errors';
 import {ViewType} from '@angular/core/src/linker/view_type';
@@ -252,6 +252,8 @@ function createOperatorFn(op: o.BinaryOperator) {
       o.DYNAMIC_TYPE);
 }
 
-export class SimpleJsImportGenerator implements ImportGenerator {
-  getImportPath(moduleUrlStr: string, importedUrlStr: string): string { return importedUrlStr; }
+export class SimpleJsImportGenerator implements ImportResolver {
+  resolveFileToImport(importedUrlStr: string, moduleUrlStr: string): string {
+    return importedUrlStr;
+  }
 }