Move event stuff of web_view.js to its own class/file.

chrome/browser/guest_view/guest_view_base.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/guest_view/guest_view_base.h"
 
 #include "base/lazy_instance.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/guest_view/guest_view_constants.h"
 #include "chrome/browser/guest_view/guest_view_manager.h"
@@ skipping 238 matching lines @@
   }
 
   if (!attached()) {
     pending_events_.push_back(linked_ptr<Event>(event_ptr.release()));
     return;
   }
 
   Profile* profile = Profile::FromBrowserContext(browser_context_);
 
   extensions::EventFilteringInfo info;
-  info.SetInstanceID(guest_instance_id_);
+  info.SetInstanceID(view_instance_id_);
   scoped_ptr<base::ListValue> args(new base::ListValue());
   args->Append(event->GetArguments().release());
 
   extensions::EventRouter::DispatchEvent(
       embedder_web_contents_,
       profile,
       embedder_extension_id_,
       event->name(),
       args.Pass(),
       extensions::EventRouter::USER_GESTURE_UNKNOWN,
       info);
 }
 
 void GuestViewBase::SendQueuedEvents() {
   if (!attached())
     return;
   while (!pending_events_.empty()) {
     linked_ptr<Event> event_ptr = pending_events_.front();
     pending_events_.pop_front();
     DispatchEvent(event_ptr.release());
   }
 }