Change wildcard source expression matching to conform latest spec

chrome/browser/ui/webui/media_router/media_router_ui.cc

 // Copyright 2015 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/media_router/media_router_ui.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 165 matching lines @@
 
   content::WebContents* wc = web_ui->GetWebContents();
   DCHECK(wc);
 
   router_ =
       MediaRouterFactory::GetApiForBrowserContext(wc->GetBrowserContext());
 
   // Allows UI to load extensionview.
   // TODO(haibinlu): limit object-src to current extension once crbug/514866
   // is fixed.
-  html_source->OverrideContentSecurityPolicyObjectSrc("object-src *;");
+  html_source->OverrideContentSecurityPolicyObjectSrc("object-src chrome:;");
 
   AddLocalizedStrings(html_source.get());
   AddMediaRouterUIResources(html_source.get());
   // Ownership of |html_source| is transferred to the BrowserContext.
   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui),
                                 html_source.release());
 
   // Ownership of |handler_| is transferred to |web_ui|.
   web_ui->AddMessageHandler(handler_);
 }
@@ skipping 501 matching lines @@
         base::Time::Now() - start_time_);
     start_time_ = base::Time();
   }
 }
 
 void MediaRouterUI::UpdateMaxDialogHeight(int height) {
   handler_->UpdateMaxDialogHeight(height);
 }
 
 }  // namespace media_router