GuestView: Move lifetime management out of content

extensions/renderer/resources/web_view_events.js

Index: extensions/renderer/resources/web_view_events.js
diff --git a/extensions/renderer/resources/web_view_events.js b/extensions/renderer/resources/web_view_events.js
index 13af04c544f941750f79072dc6a8aae9e00f29d6..69e37110c8ab5593a5283f78fe205e7f4bf0c287 100644
--- a/extensions/renderer/resources/web_view_events.js
+++ b/extensions/renderer/resources/web_view_events.js
@@ -158,7 +158,6 @@ function WebViewEvents(webViewInternal, viewInstanceId) {
 // Sets up events.
 WebViewEvents.prototype.setup = function() {
   this.setupFrameNameChangedEvent();
-  this.setupPluginDestroyedEvent();
   this.webViewInternal.maybeSetupChromeWebViewEvents();
   this.webViewInternal.setupExperimentalContextMenus();
 
@@ -174,12 +173,6 @@ WebViewEvents.prototype.setupFrameNameChangedEvent = function() {
   }.bind(this), {instanceId: this.viewInstanceId});
 };
 
-WebViewEvents.prototype.setupPluginDestroyedEvent = function() {
-  PluginDestroyedEvent.addListener(function(e) {
-    this.webViewInternal.onPluginDestroyed();
-  }.bind(this), {instanceId: this.viewInstanceId});
-};
-
 WebViewEvents.prototype.getEvents = function() {
   var experimentalEvents = this.webViewInternal.maybeGetExperimentalEvents();
   for (var eventName in experimentalEvents) {