Fix Crash in ExtensionSorting::SyncIfNeeded

Replace CHECK with if statement, since it is possible to have old extensions that have ordinal values.


BUG=120978
TEST=Old profiles with extensions that have ordinal values don't crash on startup


Review URL: http://codereview.chromium.org/9956020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@130040 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed