Persist SQLite journal files.

The default is DELETE mode, in which the delete commits the
transaction.  PERSIST keeps the files around, but zeros out the
header.

journal_mode has been in SQLite since 3.5.9 (2008), so even very old
versions of Chromium should interact well.

BUG=118470
TEST=none


Review URL: http://codereview.chromium.org/9702092

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@127366 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed