Various webview cleanup.

extensions/renderer/resources/guest_view/web_view_events.js

Index: extensions/renderer/resources/guest_view/web_view_events.js
diff --git a/extensions/renderer/resources/guest_view/web_view_events.js b/extensions/renderer/resources/guest_view/web_view_events.js
index 73249c4227f9ead204ccc3b88dfa4c7d31b056f2..73a5b08b229c179a7fd3085761026d5b727b780e 100644
--- a/extensions/renderer/resources/guest_view/web_view_events.js
+++ b/extensions/renderer/resources/guest_view/web_view_events.js
@@ -191,7 +191,6 @@ function WebViewEvents(webViewImpl, viewInstanceId) {
   // Set up the events.
   this.setupFrameNameChangedEvent();
   this.setupWebRequestEvents();
-  this.webViewImpl.setupExperimentalContextMenus();
   var events = this.getEvents();
   for (var eventName in events) {
     this.setupEvent(eventName, events[eventName]);
@@ -269,10 +268,6 @@ WebViewEvents.prototype.setupWebRequestEvents = function() {
 };
 
 WebViewEvents.prototype.getEvents = function() {
-  var experimentalEvents = this.webViewImpl.maybeGetExperimentalEvents();
-  for (var eventName in experimentalEvents) {
-    WEB_VIEW_EVENTS[eventName] = experimentalEvents[eventName];
-  }
   var chromeEvents = this.webViewImpl.maybeGetChromeWebViewEvents();
   for (var eventName in chromeEvents) {
     WEB_VIEW_EVENTS[eventName] = chromeEvents[eventName];
@@ -327,7 +322,7 @@ WebViewEvents.prototype.handleDialogEvent = function(event, webViewEvent) {
   };
 
   var getGuestInstanceId = function() {
-    return this.webViewImpl.getGuestInstanceId();
+    return this.webViewImpl.guestInstanceId;
   }.bind(this);
 
   var dialog = {