Change GuestViewInternalCreateGuestFunction to create the guest view using the

extensions/browser/extension_function.cc

 // Copyright 2013 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/extension_function.h"
 
 #include "base/logging.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_frame_host.h"
@@ skipping 357 matching lines @@
 }
 
 void UIThreadExtensionFunction::SetRenderFrameHost(
     content::RenderFrameHost* render_frame_host) {
   DCHECK(!render_view_host_);
   render_frame_host_ = render_frame_host;
   tracker_.reset(render_frame_host ? new RenderHostTracker(this) : NULL);
 }
 
 content::WebContents* UIThreadExtensionFunction::GetAssociatedWebContents() {
-  content::WebContents* web_contents = NULL;
-  if (dispatcher())
-    web_contents = dispatcher()->delegate()->GetAssociatedWebContents();
+  return dispatcher() ? dispatcher()->delegate()->GetAssociatedWebContents()
+                      : NULL;
+}
 
-  return web_contents;
+content::WebContents* UIThreadExtensionFunction::GetVisibleWebContents() {
+  return dispatcher() ? dispatcher()->delegate()->GetVisibleWebContents()
+                      : NULL;
 }
 
 void UIThreadExtensionFunction::SendResponse(bool success) {
   if (delegate_)
     delegate_->OnSendResponse(this, success, bad_message_);
   else
     SendResponseImpl(success);
 
   if (!transferred_blob_uuids_.empty()) {
     DCHECK(!delegate_) << "Blob transfer not supported with test delegate.";
@@ skipping 88 matching lines @@
 
 ExtensionFunction::ResponseAction SyncIOThreadExtensionFunction::Run() {
   return RespondNow(RunSync() ? ArgumentList(results_.Pass()) : Error(error_));
 }
 
 // static
 bool SyncIOThreadExtensionFunction::ValidationFailure(
     SyncIOThreadExtensionFunction* function) {
   return false;
 }