Use SNAPSHOT sync mode for LocalSync

chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.cc

Index: chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.cc
diff --git a/chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.cc b/chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.cc
index 31da33647d35b762f8e2ee807a6a32ab810c17c8..d8fd8a1b1feaaf1fadb1e8139823d1dac14035af 100644
--- a/chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.cc
+++ b/chrome/browser/sync_file_system/drive_backend_v1/drive_file_sync_service.cc
@@ -48,15 +48,6 @@ typedef RemoteFileSyncService::OriginStatusMap OriginStatusMap;
 namespace {
 
 const base::FilePath::CharType kTempDirName[] = FILE_PATH_LITERAL("tmp");
-const base::FilePath::CharType kSyncFileSystemDir[] =
-    FILE_PATH_LITERAL("Sync FileSystem");
-const base::FilePath::CharType kSyncFileSystemDirDev[] =
-    FILE_PATH_LITERAL("Sync FileSystem Dev");
-
-const base::FilePath::CharType* GetSyncFileSystemDir() {
-  return IsSyncFSDirectoryOperationEnabled()
-      ? kSyncFileSystemDirDev : kSyncFileSystemDir;
-}
 
 void EmptyStatusCallback(SyncStatusCode status) {}
 
@@ -351,14 +342,14 @@ void DriveFileSyncService::Initialize(
 
   task_manager_ = task_manager.Pass();
 
-  temporary_file_dir_ =
-      profile_->GetPath().Append(GetSyncFileSystemDir()).Append(kTempDirName);
+  temporary_file_dir_ = sync_file_system::GetSyncFileSystemDir(
+      profile_->GetPath()).Append(kTempDirName);
 
   api_util_.reset(new drive_backend::APIUtil(profile_, temporary_file_dir_));
   api_util_->AddObserver(this);
 
   metadata_store_.reset(new DriveMetadataStore(
-      profile_->GetPath().Append(GetSyncFileSystemDir()),
+      GetSyncFileSystemDir(profile_->GetPath()),
       content::BrowserThread::GetMessageLoopProxyForThread(
           content::BrowserThread::FILE).get()));