Rewrite download manager unit to be actual unit tests.

content/browser/browser_context.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 "content/public/browser/browser_context.h"
 
 #include "content/browser/appcache/chrome_appcache_service.h"
 #include "content/browser/dom_storage/dom_storage_context_impl.h"
 #include "content/browser/download/download_manager_impl.h"
 #include "content/browser/fileapi/browser_file_system_helper.h"
@@ skipping 57 matching lines @@
       context->GetPath(), context->IsOffTheRecord(),
       context->GetSpecialStoragePolicy(), quota_manager->proxy());
   context->SetUserData(
       kFileSystemContextKeyName,
       new UserDataAdapter<FileSystemContext>(filesystem_context));
 
   scoped_refptr<DatabaseTracker> db_tracker = new DatabaseTracker(
       context->GetPath(), context->IsOffTheRecord(),
       context->GetSpecialStoragePolicy(), quota_manager->proxy(),
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE));
-  context->SetUserData(kDatabaseTrackerKeyName, 
+  context->SetUserData(kDatabaseTrackerKeyName,
                        new UserDataAdapter<DatabaseTracker>(db_tracker));
 
   FilePath path = context->IsOffTheRecord() ? FilePath() : context->GetPath();
   scoped_refptr<DOMStorageContextImpl> dom_storage_context =
       new DOMStorageContextImpl(path, context->GetSpecialStoragePolicy());
   context->SetUserData(
       kDOMStorageContextKeyName,
       new UserDataAdapter<DOMStorageContextImpl>(dom_storage_context));
 
   scoped_refptr<IndexedDBContext> indexed_db_context = new IndexedDBContextImpl(
@@ skipping 46 matching lines @@
 DOMStorageContextImpl* GetDOMStorageContextImpl(BrowserContext* context) {
   return static_cast<DOMStorageContextImpl*>(
       BrowserContext::GetDOMStorageContext(context));
 }
 
 }  // namespace
 
 DownloadManager* BrowserContext::GetDownloadManager(
     BrowserContext* context) {
   if (!context->GetUserData(kDownloadManagerKeyName)) {
-    scoped_refptr<DownloadManager> download_manager = new DownloadManagerImpl(
-        GetContentClient()->browser()->GetNetLog());
+    scoped_refptr<DownloadManager> download_manager =
+        DownloadManagerImpl::Create(GetContentClient()->browser()->GetNetLog());
     context->SetUserData(
         kDownloadManagerKeyName,
         new UserDataAdapter<DownloadManager>(download_manager));
     download_manager->SetDelegate(context->GetDownloadManagerDelegate());
     download_manager->Init(context);
   }
 
   return UserDataAdapter<DownloadManager>::Get(
       context, kDownloadManagerKeyName);
 }
@@ skipping 90 matching lines @@
   }
 
   if (GetUserData(kDOMStorageContextKeyName))
     GetDOMStorageContextImpl(this)->Shutdown();
 
   if (GetUserData(kDownloadManagerKeyName))
     GetDownloadManager(this)->Shutdown();
 }
 
 }  // namespace content