refactor(core): move EventManager from core to platform/dom

Closes #5465

modules/angular2/src/core/render/event_manager.ts

@@ -1,57 +0,0 @@
-import {CONST_EXPR} from 'angular2/src/facade/lang';
-import {BaseException, WrappedException} from 'angular2/src/facade/exceptions';
-import {Injectable, Inject, OpaqueToken} from 'angular2/src/core/di';
-import {NgZone} from 'angular2/src/core/zone/ng_zone';
-import {ListWrapper} from 'angular2/src/facade/collection';
-
-export const EVENT_MANAGER_PLUGINS: OpaqueToken =
-    CONST_EXPR(new OpaqueToken("EventManagerPlugins"));
-
-@Injectable()
-export class EventManager {
-  private _plugins: EventManagerPlugin[];
-
-  constructor(@Inject(EVENT_MANAGER_PLUGINS) plugins: EventManagerPlugin[], private _zone: NgZone) {
-    plugins.forEach(p => p.manager = this);
-    this._plugins = ListWrapper.reversed(plugins);
-  }
-
-  addEventListener(element: HTMLElement, eventName: string, handler: Function) {
-    var plugin = this._findPluginFor(eventName);
-    plugin.addEventListener(element, eventName, handler);
-  }
-
-  addGlobalEventListener(target: string, eventName: string, handler: Function): Function {
-    var plugin = this._findPluginFor(eventName);
-    return plugin.addGlobalEventListener(target, eventName, handler);
-  }
-
-  getZone(): NgZone { return this._zone; }
-
-  /** @internal */
-  _findPluginFor(eventName: string): EventManagerPlugin {
-    var plugins = this._plugins;
-    for (var i = 0; i < plugins.length; i++) {
-      var plugin = plugins[i];
-      if (plugin.supports(eventName)) {
-        return plugin;
-      }
-    }
-    throw new BaseException(`No event manager plugin found for event ${eventName}`);
-  }
-}
-
-export class EventManagerPlugin {
-  manager: EventManager;
-
-  // That is equivalent to having supporting $event.target
-  supports(eventName: string): boolean { return false; }
-
-  addEventListener(element: HTMLElement, eventName: string, handler: Function) {
-    throw "not implemented";
-  }
-
-  addGlobalEventListener(element: string, eventName: string, handler: Function): Function {
-    throw "not implemented";
-  }
-}