Show ServiceWorkers in chrome://inspect.

content/browser/service_worker/service_worker_internals_ui.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 "content/browser/service_worker/service_worker_internals_ui.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 180 matching lines @@
     : WebUIController(web_ui), next_partition_id_(0) {
   WebUIDataSource* source =
       WebUIDataSource::Create(kChromeUIServiceWorkerInternalsHost);
   source->SetUseJsonJSFormatV2();
   source->SetJsonPath("strings.js");
   source->AddResourcePath("serviceworker_internals.js",
                           IDR_SERVICE_WORKER_INTERNALS_JS);
   source->AddResourcePath("serviceworker_internals.css",
                           IDR_SERVICE_WORKER_INTERNALS_CSS);
   source->SetDefaultResource(IDR_SERVICE_WORKER_INTERNALS_HTML);
+  source->DisableDenyXFrameOptions();
 
   BrowserContext* browser_context =
       web_ui->GetWebContents()->GetBrowserContext();
   WebUIDataSource::Add(browser_context, source);
 
   web_ui->RegisterMessageCallback(
       "getAllRegistrations",
       base::Bind(&ServiceWorkerInternalsUI::GetAllRegistrations,
                  base::Unretained(this)));
   web_ui->RegisterMessageCallback(
@@ skipping 478 matching lines @@
     DevToolsManagerImpl::GetInstance()->Inspect(
         internals_->web_ui()->GetWebContents()->GetBrowserContext(),
         agent_host.get());
     OperationComplete(SERVICE_WORKER_OK);
     return;
   }
   OperationComplete(SERVICE_WORKER_ERROR_NOT_FOUND);
 }
 
 }  // namespace content