Initialize destination as late as possible to pick up any format changes.

BUG=311293

Review URL: https://codereview.chromium.org/40853004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231171 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 231171