Implement most of the ridealong fixes/cleanups I suggested during review for enabling warn-on-signed-versus-unsigned-equality-comparisions on Windows.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/2395001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@48666 0039d316-1c4b-4281-b951-d872f2087c98
13 files changed