GitLab

If the cause of a rename failure is suspected of being transient
(sharing violations, suspected race conditions in the file system), then
retry the rename with an exponential backoff.

BUG=368455

Review URL: https://codereview.chromium.org/319603003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278483 0039d316-1c4b-4281-b951-d872f2087c98