diff --git a/aio/scripts/_payload-limits.json b/aio/scripts/_payload-limits.json
index ad9cc918ef..6de9bf06e5 100755
--- a/aio/scripts/_payload-limits.json
+++ b/aio/scripts/_payload-limits.json
@@ -28,8 +28,8 @@
       "uncompressed": {
         "runtime-es5": 2932,
         "runtime-es2015": 2938,
-        "main-es5": 554068,
-        "main-es2015": 495320,
+        "main-es5": 552068,
+        "main-es2015": 493320,
         "polyfills-es5": 131024,
         "polyfills-es2015": 52433
       }
diff --git a/integration/_payload-limits.json b/integration/_payload-limits.json
index a8de81aab5..58fb24e623 100644
--- a/integration/_payload-limits.json
+++ b/integration/_payload-limits.json
@@ -3,7 +3,7 @@
     "master": {
       "uncompressed": {
         "runtime": 1497,
-        "main": 164387,
+        "main": 161490,
         "polyfills": 45399
       }
     }
@@ -21,7 +21,7 @@
     "master": {
       "uncompressed": {
         "runtime": 1440,
-        "main": 130975,
+        "main": 128448,
         "polyfills": 45340
       }
     }
diff --git a/packages/core/test/linker/integration_spec.ts b/packages/core/test/linker/integration_spec.ts
index e5b6dab56b..23727dbea7 100644
--- a/packages/core/test/linker/integration_spec.ts
+++ b/packages/core/test/linker/integration_spec.ts
@@ -19,7 +19,7 @@ import {EmbeddedViewRef} from '@angular/core/src/linker/view_ref';
 import {Attribute, Component, ContentChildren, Directive, HostBinding, HostListener, Input, Output, Pipe} from '@angular/core/src/metadata';
 import {TestBed, async, fakeAsync, getTestBed, tick} from '@angular/core/testing';
 import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
-import {dispatchEvent, el, isCommentNode} from '@angular/platform-browser/testing/src/browser_util';
+import {createMouseEvent, dispatchEvent, el, isCommentNode} from '@angular/platform-browser/testing/src/browser_util';
 import {expect} from '@angular/platform-browser/testing/src/matchers';
 import {modifiedInIvy, obsoleteInIvy, onlyInIvy} from '@angular/private/testing';
 
@@ -1000,12 +1000,12 @@ function declareTests(config?: {useJit: boolean}) {
           TestBed.overrideComponent(MyComp, {set: {template}});
           const fixture = TestBed.createComponent(MyComp);
 
-          const dispatchedEvent = getDOM().createMouseEvent('click');
-          const dispatchedEvent2 = getDOM().createMouseEvent('click');
+          const dispatchedEvent = createMouseEvent('click');
+          const dispatchedEvent2 = createMouseEvent('click');
           getDOM().dispatchEvent(fixture.debugElement.children[0].nativeElement, dispatchedEvent);
           getDOM().dispatchEvent(fixture.debugElement.children[1].nativeElement, dispatchedEvent2);
-          expect(getDOM().isPrevented(dispatchedEvent)).toBe(true);
-          expect(getDOM().isPrevented(dispatchedEvent2)).toBe(false);
+          expect(isPrevented(dispatchedEvent)).toBe(true);
+          expect(isPrevented(dispatchedEvent2)).toBe(false);
           expect(fixture.debugElement.children[0].nativeElement.checked).toBeFalsy();
           expect(fixture.debugElement.children[1].nativeElement.checked).toBeTruthy();
         });
@@ -1493,9 +1493,8 @@ function declareTests(config?: {useJit: boolean}) {
 
         expect(noSelectorComponentFactory.selector).toBe('ng-component');
 
-        expect(
-            noSelectorComponentFactory.create(Injector.NULL).location.nativeElement.nodeName
-                .toLowerCase())
+        expect(noSelectorComponentFactory.create(Injector.NULL)
+                   .location.nativeElement.nodeName.toLowerCase())
             .toEqual('ng-component');
       });
     });
@@ -1961,7 +1960,7 @@ function declareTests(config?: {useJit: boolean}) {
           fixture.detectChanges();
           const dir = fixture.debugElement.children[0].injector.get(DirectiveWithPropDecorators);
           const native = fixture.debugElement.children[0].nativeElement;
-          getDOM().dispatchEvent(native, getDOM().createMouseEvent('click'));
+          getDOM().dispatchEvent(native, createMouseEvent('click'));
 
           expect(dir.target).toBe(native);
         });
@@ -2745,3 +2744,7 @@ export class ParentCmp {
 class SomeCmpWithInput {
   @Input() test$: any;
 }
+
+function isPrevented(evt: Event): boolean {
+  return evt.defaultPrevented || evt.returnValue != null && !evt.returnValue;
+}
diff --git a/packages/platform-browser/src/browser/browser_adapter.ts b/packages/platform-browser/src/browser/browser_adapter.ts
index 29eba32db0..e68933fb8f 100644
--- a/packages/platform-browser/src/browser/browser_adapter.ts
+++ b/packages/platform-browser/src/browser/browser_adapter.ts
@@ -113,7 +113,6 @@ export class BrowserDomAdapter extends GenericBrowserDomAdapter {
   contains(nodeA: any, nodeB: any): boolean { return nodeContains.call(nodeA, nodeB); }
   querySelector(el: HTMLElement, selector: string): any { return el.querySelector(selector); }
   querySelectorAll(el: any, selector: string): any[] { return el.querySelectorAll(selector); }
-  on(el: Node, evt: any, listener: any) { el.addEventListener(evt, listener, false); }
   onAndCancel(el: Node, evt: any, listener: any): Function {
     el.addEventListener(evt, listener, false);
     // Needed to follow Dart's subscription semantic, until fix of
@@ -121,23 +120,6 @@ export class BrowserDomAdapter extends GenericBrowserDomAdapter {
     return () => { el.removeEventListener(evt, listener, false); };
   }
   dispatchEvent(el: Node, evt: any) { el.dispatchEvent(evt); }
-  createMouseEvent(eventType: string): MouseEvent {
-    const evt: MouseEvent = this.getDefaultDocument().createEvent('MouseEvent');
-    evt.initEvent(eventType, true, true);
-    return evt;
-  }
-  createEvent(eventType: any): Event {
-    const evt: Event = this.getDefaultDocument().createEvent('Event');
-    evt.initEvent(eventType, true, true);
-    return evt;
-  }
-  preventDefault(evt: Event) {
-    evt.preventDefault();
-    evt.returnValue = false;
-  }
-  isPrevented(evt: Event): boolean {
-    return evt.defaultPrevented || evt.returnValue != null && !evt.returnValue;
-  }
   nextSibling(el: Node): Node|null { return el.nextSibling; }
   parentElement(el: Node): Node|null { return el.parentNode; }
   clearNodes(el: Node) {
diff --git a/packages/platform-browser/src/dom/dom_adapter.ts b/packages/platform-browser/src/dom/dom_adapter.ts
index 2303f684e8..b049f22947 100644
--- a/packages/platform-browser/src/dom/dom_adapter.ts
+++ b/packages/platform-browser/src/dom/dom_adapter.ts
@@ -6,7 +6,6 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Type} from '@angular/core';
 
 let _DOM: DomAdapter = null !;
 
@@ -45,13 +44,7 @@ export abstract class DomAdapter {
   abstract parse(templateHtml: string): any;
   abstract querySelector(el: any, selector: string): any;
   abstract querySelectorAll(el: any, selector: string): any[];
-  abstract on(el: any, evt: any, listener: any): any;
-  abstract onAndCancel(el: any, evt: any, listener: any): Function;
   abstract dispatchEvent(el: any, evt: any): any;
-  abstract createMouseEvent(eventType: any): any;
-  abstract createEvent(eventType: string): any;
-  abstract preventDefault(evt: any): any;
-  abstract isPrevented(evt: any): boolean;
 
   // Used by Meta
   abstract remove(el: any): Node;
@@ -95,6 +88,7 @@ export abstract class DomAdapter {
   abstract getHost(el: any): any;
 
   // Used by KeyEventsPlugin
+  abstract onAndCancel(el: any, evt: any, listener: any): Function;
   abstract getEventKey(event: any): string;
   abstract supportsDOMEvents(): boolean;
 
diff --git a/packages/platform-browser/test/dom/events/event_manager_spec.ts b/packages/platform-browser/test/dom/events/event_manager_spec.ts
index a1da0f2e49..3510d4f146 100644
--- a/packages/platform-browser/test/dom/events/event_manager_spec.ts
+++ b/packages/platform-browser/test/dom/events/event_manager_spec.ts
@@ -11,7 +11,8 @@ import {beforeEach, describe, expect, it} from '@angular/core/testing/src/testin
 import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
 import {DomEventsPlugin} from '@angular/platform-browser/src/dom/events/dom_events';
 import {EventManager, EventManagerPlugin} from '@angular/platform-browser/src/dom/events/event_manager';
-import {el} from '../../../testing/src/browser_util';
+
+import {createMouseEvent, el} from '../../../testing/src/browser_util';
 
 (function() {
   if (isNode) return;
@@ -63,8 +64,8 @@ import {el} from '../../../testing/src/browser_util';
       // Workaround for https://bugs.webkit.org/show_bug.cgi?id=122755
       getDOM().appendChild(doc.body, element);
 
-      const child = element.firstChild;
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const child = element.firstChild as Element;
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvent: any /** TODO #9100 */ = null;
       const handler = (e: any /** TODO #9100 */) => { receivedEvent = e; };
       const manager = new EventManager([domEventPlugin], new FakeNgZone());
@@ -77,7 +78,7 @@ import {el} from '../../../testing/src/browser_util';
     it('should add and remove global event listeners', () => {
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvent: any /** TODO #9100 */ = null;
       const handler = (e: any /** TODO #9100 */) => { receivedEvent = e; };
       const manager = new EventManager([domEventPlugin], new FakeNgZone());
@@ -97,7 +98,7 @@ import {el} from '../../../testing/src/browser_util';
 
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvent: any /** TODO #9100 */ = null;
       let receivedZone: any = null;
       const handler = (e: any /** TODO #9100 */) => {
@@ -123,7 +124,7 @@ import {el} from '../../../testing/src/browser_util';
 
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvents: any[] /** TODO #9100 */ = [];
       let receivedZones: any[] = [];
       const handler1 = (e: any /** TODO #9100 */) => {
@@ -158,7 +159,7 @@ import {el} from '../../../testing/src/browser_util';
 
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvents: any[] /** TODO #9100 */ = [];
       let receivedZones: any[] = [];
       const handler1 = (e: any /** TODO #9100 */) => {
@@ -194,7 +195,7 @@ import {el} from '../../../testing/src/browser_util';
 
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvents: any[] /** TODO #9100 */ = [];
       let receivedZones: any[] = [];
       let remover1: any = null;
@@ -230,7 +231,7 @@ import {el} from '../../../testing/src/browser_util';
 
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvents: any[] /** TODO #9100 */ = [];
       let receivedZones: any[] = [];
       const handler = (e: any /** TODO #9100 */) => {
@@ -261,7 +262,7 @@ import {el} from '../../../testing/src/browser_util';
 
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('click');
+      const dispatchedEvent = createMouseEvent('click');
       let receivedEvents: any[] /** TODO #9100 */ = [];
       let receivedZones: any[] = [];
       const handler1 = (e: any /** TODO #9100 */) => {
@@ -300,7 +301,7 @@ import {el} from '../../../testing/src/browser_util';
       const Zone = (window as any)['Zone'];
       const element = el('<div><div></div></div>');
       getDOM().appendChild(doc.body, element);
-      const dispatchedEvent = getDOM().createMouseEvent('scroll');
+      const dispatchedEvent = createMouseEvent('scroll');
       let receivedEvent: any /** TODO #9100 */ = null;
       let receivedZone: any = null;
       const handler = (e: any /** TODO #9100 */) => {
diff --git a/packages/platform-browser/testing/src/browser_util.ts b/packages/platform-browser/testing/src/browser_util.ts
index 54e91cdcaa..489013e313 100644
--- a/packages/platform-browser/testing/src/browser_util.ts
+++ b/packages/platform-browser/testing/src/browser_util.ts
@@ -91,7 +91,15 @@ export class BrowserDetection {
 BrowserDetection.setup();
 
 export function dispatchEvent(element: any, eventType: any): void {
-  getDOM().dispatchEvent(element, getDOM().createEvent(eventType));
+  const evt: Event = getDOM().getDefaultDocument().createEvent('Event');
+  evt.initEvent(eventType, true, true);
+  getDOM().dispatchEvent(element, evt);
+}
+
+export function createMouseEvent(eventType: string): MouseEvent {
+  const evt: MouseEvent = getDOM().getDefaultDocument().createEvent('MouseEvent');
+  evt.initEvent(eventType, true, true);
+  return evt;
 }
 
 export function el(html: string): HTMLElement {
diff --git a/packages/platform-webworker/src/web_workers/worker/worker_adapter.ts b/packages/platform-webworker/src/web_workers/worker/worker_adapter.ts
index 3a54ce5a7a..903dfacdb9 100644
--- a/packages/platform-webworker/src/web_workers/worker/worker_adapter.ts
+++ b/packages/platform-webworker/src/web_workers/worker/worker_adapter.ts
@@ -54,13 +54,8 @@ export class WorkerDomAdapter extends DomAdapter {
   parse(templateHtml: string) { throw 'not implemented'; }
   querySelector(el: any, selector: string): HTMLElement { throw 'not implemented'; }
   querySelectorAll(el: any, selector: string): any[] { throw 'not implemented'; }
-  on(el: any, evt: any, listener: any) { throw 'not implemented'; }
   onAndCancel(el: any, evt: any, listener: any): Function { throw 'not implemented'; }
   dispatchEvent(el: any, evt: any) { throw 'not implemented'; }
-  createMouseEvent(eventType: any): any { throw 'not implemented'; }
-  createEvent(eventType: string): any { throw 'not implemented'; }
-  preventDefault(evt: any) { throw 'not implemented'; }
-  isPrevented(evt: any): boolean { throw 'not implemented'; }
   nextSibling(el: any): Node { throw 'not implemented'; }
   parentElement(el: any): Node { throw 'not implemented'; }
   clearNodes(el: any) { throw 'not implemented'; }