Implement support for <extensionoptions> embedding in WebUI

chrome/browser/ui/webui/extensions/extensions_ui.cc

 // Copyright (c) 2012 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/ui/webui/extensions/extensions_ui.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/extensions/command_handler.h"
 #include "chrome/browser/ui/webui/extensions/extension_error_handler.h"
 #include "chrome/browser/ui/webui/extensions/extension_loader_handler.h"
@@ skipping 66 matching lines @@
 
 #if defined(OS_CHROMEOS)
   chromeos::KioskAppsHandler* kiosk_app_handler =
       new chromeos::KioskAppsHandler();
   kiosk_app_handler->GetLocalizedValues(source);
   web_ui->AddMessageHandler(kiosk_app_handler);
 #endif
 
   web_ui->AddMessageHandler(new MetricsHandler());
 
+  // Need to allow <object> elements so that the <extensionoptions> browser
+  // plugin can be loaded within chrome://extensions.
+  source->OverrideContentSecurityPolicyObjectSrc("object-src 'self';");
+
   content::WebUIDataSource::Add(profile, source);
 }
 
 ExtensionsUI::~ExtensionsUI() {}
 
 // static
 base::RefCountedMemory* ExtensionsUI::GetFaviconResourceBytes(
     ui::ScaleFactor scale_factor) {
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   return rb.LoadDataResourceBytesForScale(IDR_EXTENSIONS_FAVICON, scale_factor);
 }
 
 }  // namespace extensions