Remove DOCUMENT token

Author: willshowell

src/cdk/overlay/keyboard/overlay-keyboard-dispatcher.ts

@@ -6,8 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Inject, Injectable, Optional, SkipSelf, OnDestroy} from '@angular/core';
-import {DOCUMENT} from '@angular/platform-browser';
+import {Injectable, Optional, SkipSelf, OnDestroy} from '@angular/core';
 import {OverlayRef} from '../overlay-ref';
 import {Subscription} from 'rxjs/Subscription';
 import {RxChain, filter} from '@angular/cdk/rxjs';
@@ -26,8 +25,6 @@ export class OverlayKeyboardDispatcher implements OnDestroy {
 
   private _keydownEventSubscription: Subscription | null;
 
-  constructor(@Optional() @Inject(DOCUMENT) private _document: any) { }
-
   ngOnDestroy() {
     if (this._keydownEventSubscription) {
       this._keydownEventSubscription.unsubscribe();
@@ -58,7 +55,7 @@ export class OverlayKeyboardDispatcher implements OnDestroy {
    * events to the appropriate overlay.
    */
   private _subscribeToKeydownEvents(): void {
-    const bodyKeydownEvents = fromEvent<KeyboardEvent>(this._document.body, 'keydown');
+    const bodyKeydownEvents = fromEvent<KeyboardEvent>(document.body, 'keydown');
 
     this._keydownEventSubscription = RxChain.from(bodyKeydownEvents)
       .call(filter, () => !!this._attachedOverlays.length)
@@ -84,15 +81,15 @@ export class OverlayKeyboardDispatcher implements OnDestroy {
 
 /** @docs-private */
 export function OVERLAY_KEYBOARD_DISPATCHER_PROVIDER_FACTORY(
-      dispatcher: OverlayKeyboardDispatcher, _document) {
-  return dispatcher || new OverlayKeyboardDispatcher(_document);
+    dispatcher: OverlayKeyboardDispatcher) {
+  return dispatcher || new OverlayKeyboardDispatcher();
 }
 
 /** @docs-private */
 export const OVERLAY_KEYBOARD_DISPATCHER_PROVIDER = {
   // If there is already an OverlayKeyboardDispatcher available, use that.
   // Otherwise, provide a new one.
   provide: OverlayKeyboardDispatcher,
-  deps: [[new Optional(), new SkipSelf(), OverlayKeyboardDispatcher], [new Optional(), DOCUMENT]],
+  deps: [[new Optional(), new SkipSelf(), OverlayKeyboardDispatcher]],
   useFactory: OVERLAY_KEYBOARD_DISPATCHER_PROVIDER_FACTORY
 };