Use MAC_OS_X_DEPLOYMENT_TARGET instead of rolling our own macro.
Allow the deployment target and SDK to be overridden by GYP variables.
Review URL: http://codereview.chromium.org/193128

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@26360 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed