Partial revert of r37053. Put back the gcl default CODEREVIEW_SETTINGS as we had it before, except with an updated CC_LIST.

BUG=none
TEST=Using gcl from src/third_party/WebKit sends code reviews to codereview.chromium.org.
Review URL: http://codereview.chromium.org/552144

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@37069 0039d316-1c4b-4281-b951-d872f2087c98