Move LazyBackgroundTaskQueueTest into extensions_unittests

extensions/browser/lazy_background_task_queue.cc

 // Copyright 2013 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/browser/lazy_background_task_queue.h"
 
 #include "base/callback.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 26 matching lines @@
 
   extension_registry_observer_.Add(ExtensionRegistry::Get(browser_context));
 }
 
 LazyBackgroundTaskQueue::~LazyBackgroundTaskQueue() {
 }
 
 bool LazyBackgroundTaskQueue::ShouldEnqueueTask(
     content::BrowserContext* browser_context,
     const Extension* extension) {
+  // Note: browser_context may not be the same as browser_context_ for incognito
+  // extension tasks.
   DCHECK(extension);
   if (BackgroundInfo::HasBackgroundPage(extension)) {
     ProcessManager* pm = ExtensionSystem::Get(
         browser_context)->process_manager();
     DCHECK(pm);
     ExtensionHost* background_host =
         pm->GetBackgroundHostForExtension(extension->id());
     if (!background_host || !background_host->did_stop_loading())
       return true;
     if (pm->IsBackgroundHostClosing(extension->id()))
@@ skipping 123 matching lines @@
   // task queue as well.
   ExtensionsBrowserClient* browser_client = ExtensionsBrowserClient::Get();
   if (browser_client->HasOffTheRecordContext(browser_context)) {
     ProcessPendingTasks(NULL,
                         browser_client->GetOffTheRecordContext(browser_context),
                         extension);
   }
 }
 
 }  // namespace extensions