Fix webrequest api for webview in webui

extensions/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 "extensions/browser/guest_view/guest_view_base.h"
 
 #include "base/lazy_instance.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 73 matching lines @@
     Destroy();
   }
 
  private:
   bool destroyed_;
   GuestViewBase* guest_;
 
   void Destroy() {
     if (destroyed_)
       return;
+
     destroyed_ = true;
+    guest_->EmbedderWillBeDestroyed();
     guest_->embedder_web_contents_ = NULL;
-    guest_->EmbedderDestroyed();
     guest_->Destroy();
   }
 
   DISALLOW_COPY_AND_ASSIGN(EmbedderLifetimeObserver);
 };
 
 GuestViewBase::GuestViewBase(content::BrowserContext* browser_context,
                              int guest_instance_id)
     : embedder_web_contents_(NULL),
       embedder_render_process_id_(0),
@@ skipping 386 matching lines @@
 
 // static
 void GuestViewBase::RegisterGuestViewTypes() {
   AppViewGuest::Register();
   ExtensionOptionsGuest::Register();
   MimeHandlerViewGuest::Register();
   WebViewGuest::Register();
 }
 
 }  // namespace extensions