Add ref count to service workers for extension API.

chrome/browser/extensions/api/tabs/tabs_api.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/extensions/api/tabs/tabs_api.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <limits>
 #include <memory>
@@ skipping 1382 matching lines @@
   }
 
   web_contents_->GetController().LoadURL(
       url, content::Referrer(), ui::PAGE_TRANSITION_LINK, std::string());
 
   // The URL of a tab contents never actually changes to a JavaScript URL, so
   // this check only makes sense in other cases.
   if (!url.SchemeIs(url::kJavaScriptScheme))
     DCHECK_EQ(url.spec(), web_contents_->GetURL().spec());
 
+  // Add a fake delay add async behavior (and delay) to chrome.tabs.update().
+  *is_async = true;
+  base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+      FROM_HERE, base::Bind(&TabsUpdateFunction::AfterFakeAsyncDelay, this),
+      base::TimeDelta::FromSeconds(7));
   return true;
 }
 
+void TabsUpdateFunction::AfterFakeAsyncDelay() {
+  LOG(ERROR) << "chrome.tabs.update: AfterFakeAsyncDelay fired";
+  SendResponse(true);
+}
+
 void TabsUpdateFunction::PopulateResult() {
   if (!has_callback())
     return;
 
   results_ = tabs::Get::Results::Create(
       *ExtensionTabUtil::CreateTabObject(web_contents_, extension()));
 }
 
 void TabsUpdateFunction::OnExecuteCodeFinished(
     const std::string& error,
@@ skipping 746 matching lines @@
   ZoomModeToZoomSettings(zoom_mode, &zoom_settings);
   zoom_settings.default_zoom_factor.reset(new double(
       content::ZoomLevelToZoomFactor(zoom_controller->GetDefaultZoomLevel())));
 
   results_ = api::tabs::GetZoomSettings::Results::Create(zoom_settings);
   SendResponse(true);
   return true;
 }
 
 }  // namespace extensions