Replace GetForProfile by Get{FileSystem,DriveAppRegistry,DriveService)ByProfile.

chrome/browser/chromeos/drive/download_handler.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/chromeos/drive/download_handler.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/supports_user_data.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 89 matching lines @@
       weak_ptr_factory_(this) {
 }
 
 DownloadHandler::~DownloadHandler() {
 }
 
 // static
 DownloadHandler* DownloadHandler::GetForProfile(Profile* profile) {
   DriveIntegrationService* integration_service =
       DriveIntegrationServiceFactory::FindForProfile(profile);
+  // TODO(hidehiko): FindForProfile will return the instance even if Drive is
+  // disabled. Needs to check the state. crbug.com/284972.
   return integration_service ? integration_service->download_handler() : NULL;
 }
 
 void DownloadHandler::Initialize(
     DownloadManager* download_manager,
     const base::FilePath& drive_tmp_download_path) {
   DCHECK(!drive_tmp_download_path.empty());
 
   drive_tmp_download_path_ = drive_tmp_download_path;
 
@@ skipping 181 matching lines @@
 void DownloadHandler::UploadDownloadItem(DownloadItem* download) {
   DCHECK_EQ(DownloadItem::COMPLETE, download->GetState());
   WriteOnCacheFile(
       file_system_,
       util::ExtractDrivePath(GetTargetPath(download)),
       download->GetMimeType(),
       base::Bind(&MoveDownloadedFile, download->GetTargetFilePath()));
 }
 
 }  // namespace drive