Make extensions use a correct same-origin check.

extensions/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.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/components/javascript_dialog_extensions_client/javascript_dialog_extension_client_impl.h"
 
 #include "base/macros.h"
 #include "components/app_modal/javascript_dialog_extensions_client.h"
 #include "components/app_modal/javascript_dialog_manager.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/extension.h"
 #include "ui/gfx/native_widget_types.h"
+#include "url/origin.h"
 
 namespace javascript_dialog_extensions_client {
 namespace {
 
 using extensions::Extension;
 
 // Returns the ProcessManager for the browser context from |web_contents|.
 extensions::ProcessManager* GetProcessManager(
     content::WebContents* web_contents) {
   return extensions::ProcessManager::Get(web_contents->GetBrowserContext());
@@ skipping 31 matching lines @@
 
     DCHECK(web_contents);
     extensions::ProcessManager* pm = GetProcessManager(web_contents);
     if (pm)
       pm->DecrementLazyKeepaliveCount(extension);
   }
   bool GetExtensionName(content::WebContents* web_contents,
                         const GURL& origin_url,
                         std::string* name_out) override {
     const Extension* extension = GetExtensionForWebContents(web_contents);
-    if (extension &&
-        web_contents->GetLastCommittedURL().GetOrigin() == origin_url) {
+    if (extension && url::IsSameOriginWith(
+                         origin_url, web_contents->GetLastCommittedURL())) {
       *name_out = extension->name();
       return true;
     }
     return false;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(JavaScriptDialogExtensionsClientImpl);
 };
 
 }  // namespace
 
 void InstallClient() {
   app_modal::JavaScriptDialogManager::GetInstance()->
       SetExtensionsClient(
           make_scoped_ptr(new JavaScriptDialogExtensionsClientImpl));
 }
 
 }  // namespace javascript_dialog_extensions_client