Hack: Just update the "regress" lines in the perf_expectations.json.

Because of a broken checkin earlier today, a lot of our perf data
believes that it's revision is "Force Chromium revision", making
make_expectations.py no longer work, at the same time as a minor
0.59% increase. Massively increase the "regress" line to hopefully
green the tree for now so that we can reassess our options.

Both 'chrome/chrome' lines will need real data once the internal
data has been cleaned.

BUG=335866

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245746 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245746