chore: audit @angular/core API classification (#8808)

modules/@angular/router/src/core_private.ts

@@ -1,3 +1,4 @@
-import {__core_private__} from '@angular/core';
+import {__core_private__ as _} from '@angular/core';
 
-export var makeDecorator: typeof __core_private__.makeDecorator = __core_private__.makeDecorator;
+export var makeDecorator: typeof _.makeDecorator = _.makeDecorator;
+export var reflector: typeof _.reflector = _.reflector;

modules/@angular/router/src/directives/router_link.ts

@@ -1,21 +1,6 @@
-import {
-  ResolvedReflectiveProvider,
-  Directive,
-  DynamicComponentLoader,
-  ViewContainerRef,
-  Attribute,
-  ComponentRef,
-  ComponentFactory,
-  ReflectiveInjector,
-  OnInit,
-  HostListener,
-  HostBinding,
-  Input,
-  OnDestroy,
-  Optional
-} from '@angular/core';
-import {RouterOutletMap, Router} from '../router';
-import {RouteSegment, UrlSegment, Tree} from '../segments';
+import {Directive, HostListener, HostBinding, Input, OnDestroy} from '@angular/core';
+import {Router} from '../router';
+import {RouteSegment} from '../segments';
 import {isString, isArray, isPresent} from '../facade/lang';
 import {ObservableWrapper} from '../facade/async';
 

modules/@angular/router/src/directives/router_outlet.ts

@@ -1,13 +1,11 @@
 import {
   ResolvedReflectiveProvider,
   Directive,
-  DynamicComponentLoader,
   ViewContainerRef,
   Attribute,
   ComponentRef,
   ComponentFactory,
-  ReflectiveInjector,
-  OnInit
+  ReflectiveInjector
 } from '@angular/core';
 import {RouterOutletMap} from '../router';
 import {DEFAULT_OUTLET_NAME} from '../constants';

modules/@angular/router/src/recognize.ts

@@ -15,7 +15,7 @@ import {PromiseWrapper} from './facade/promise';
 import {BaseException, ComponentFactory} from '@angular/core';
 import {ComponentResolver} from '@angular/core';
 import {DEFAULT_OUTLET_NAME} from './constants';
-import {reflector} from '@angular/core';
+import {reflector} from './core_private';
 
 export function recognize(componentResolver: ComponentResolver, rootComponent: Type, url: UrlTree,
                           existingTree: RouteTree): Promise<RouteTree> {