Add construction checksum to safe-browsing's BloomFilter.

Intending to use this to track down suspected memory corruption.

BUG=71832
TEST=none


Review URL: https://chromiumcodereview.appspot.com/10818042

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148299 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed