Let mac ninja and mac make work better with xcode 4.3.
Let mac ninja and mac make work better with xcode 4.3.

This matches this cmake change:
https://raw.github.com/gist/1958550/9c03b16c370d458a7410fd045cdb3720407c1e58/cmake-xcode-4.3-compat.patch

BUG=chromium:116939
Review URL: https://chromiumcodereview.appspot.com/9619011
witwall/gyp,witwall/gyp,witwall/gyp,witwall/gyp,witwall/gyp