GitLab

Add ChangeListLoader::CheckForUpdates()
Make ChangeListLoader::LoadFromServerIfNeeded() private.

BUG=193417
TEST=Open Drive in Files.app; Ctrl-click-on the gear menu and select 'Reload'. Confirm that the files appear shortly.

Review URL: https://codereview.chromium.org/14292002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194496 0039d316-1c4b-4281-b951-d872f2087c98