Fix AccessibilityExtensionLoader's handling of locked screen

extensions/browser/guest_view/web_view/web_view_guest.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 "extensions/browser/guest_view/web_view/web_view_guest.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 383 matching lines @@
       new ScriptExecutor(web_contents(), &script_observers_));
 
   notification_registrar_.Add(this,
                               content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
                               content::Source<WebContents>(web_contents()));
 
   notification_registrar_.Add(this,
                               content::NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
                               content::Source<WebContents>(web_contents()));
 
-  if (web_view_guest_delegate_)
-    web_view_guest_delegate_->OnDidInitialize();
   ExtensionsAPIClient::Get()->AttachWebContentsHelpers(web_contents());
   web_view_permission_helper_.reset(new WebViewPermissionHelper(this));
 
   rules_registry_id_ = GetOrGenerateRulesRegistryID(
       owner_web_contents()->GetRenderProcessHost()->GetID(),
       view_instance_id());
 
   // We must install the mapping from guests to WebViews prior to resuming
   // suspended resource loads so that the WebRequest API will catch resource
   // requests.
@@ skipping 1110 matching lines @@
     std::unique_ptr<base::DictionaryValue> args(new base::DictionaryValue());
     DispatchEventToView(base::MakeUnique<GuestViewEvent>(
         webview::kEventExitFullscreen, std::move(args)));
   }
   // Since we changed fullscreen state, sending a Resize message ensures that
   // renderer/ sees the change.
   web_contents()->GetRenderViewHost()->GetWidget()->WasResized();
 }
 
 }  // namespace extensions