gdata: Get rid of GetGDataCacheTmpDirectory() and friends

chrome/browser/download/save_package_file_picker_chromeos.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/download/save_package_file_picker_chromeos.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/file_util_icu.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 35 matching lines @@
     delete this;
     return;
   }
 
   FilePath path = selected_path;
   file_util::NormalizeFileNameEncoding(&path);
 
   gdata::GDataFileSystem* gdata_filesystem = GetGDataFileSystem();
   if (gdata_filesystem && gdata::util::IsUnderGDataMountPoint(path)) {
     FilePath gdata_tmp_download_dir =
-        gdata_filesystem->GetGDataTempDownloadFolderPath();
+        gdata_filesystem->GetCacheDirectoryPath(
+            gdata::GDataRootDirectory::CACHE_TYPE_TMP_DOWNLOADS);
 
     selected_path_ = path;
     FilePath* gdata_tmp_download_path = new FilePath();
     BrowserThread::GetBlockingPool()->PostTaskAndReply(FROM_HERE,
         base::Bind(&gdata::GDataDownloadObserver::GetGDataTempDownloadPath,
                    gdata_tmp_download_dir,
                    gdata_tmp_download_path),
         base::Bind(&SavePackageFilePickerChromeOS::GenerateMHTML,
                    base::Unretained(this),
                    base::Owned(gdata_tmp_download_path)));
@@ skipping 52 matching lines @@
 SavePackageFilePickerChromeOS::GetGDataFileSystem() {
   DCHECK(web_contents());
   Profile* profile = Profile::FromBrowserContext(
       web_contents()->GetBrowserContext());
   DCHECK(profile);
   gdata::GDataSystemService* system_service =
       gdata::GDataSystemServiceFactory::GetForProfile(profile);
   // system_service is NULL in incognito.
   return system_service ? system_service->file_system() : NULL;
 }