drive: Use UploadNewFile from EntryUpdatePerformer

Add UploadNewFileOptions argument to JobScheduler::UploadNewFile().
Pass ChangeListLoader* to SyncClient and EntryUpdatePerformer to lock the loader while creating new files.
Upload an empty file if the locally created file doesn't have a cache file.

BUG=260539
TEST=unit_tests
R=kinaba@chromium.org

Review URL: https://codereview.chromium.org/148233006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247660 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 247660