This is the implementation of the primary and secondary blob journals for
IDB/Blob support.  It's not yet used at all, so there are a few fake calls to
eliminate compiler errors until the rest of the code lands.

BUG=108012

Review URL: https://codereview.chromium.org/264483002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@267665 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed