Remove 'chromium_code' from build_angle.gyp. This is because the ninja build system, unlike make, builds translator_hlsl and fails on the clang warnings. Review URL: https://codereview.appspot.com/5647048 git-svn-id: https://angleproject.googlecode.com/svn/trunk@984 736b8ea6-26fd-11df-bfd4-992fa37f6226