Added the onResize and onContentResize events to GuestViewEvents.

extensions/renderer/resources/guest_view/guest_view_events.js

Index: extensions/renderer/resources/guest_view/guest_view_events.js
diff --git a/extensions/renderer/resources/guest_view/guest_view_events.js b/extensions/renderer/resources/guest_view/guest_view_events.js
index 415d0c4326df4ca4562839829a3244839d7b0f98..7559ee20b65c639838faa1197129b4d6fcf6f416 100644
--- a/extensions/renderer/resources/guest_view/guest_view_events.js
+++ b/extensions/renderer/resources/guest_view/guest_view_events.js
@@ -15,6 +15,11 @@ function GuestViewEvents(view) {
   this.view = view;
   this.on = {};
 
+  // |setupEventProperty| is normally called automatically, but these events are
+  // are registered here because they are dispatched from GuestViewContainer
+  // instead of in response to extension events.
+  this.setupEventProperty('contentResize');

[Fady Samuel, 2015/03/06 18:33:06]

nit: all lowercase is expected for DOM events: contentresize.

[paulmeyer, 2015/03/06 18:37:09]

Ah, right. Actually setupEventProperty() always converts the event name to all
lowercase anyways, but there's no reason not to be lowercase already here, so
I'll change it.

+  this.setupEventProperty('resize');
   this.setupEvents();
 }