Relanding 148377 - [Android] Upstream additional changes from envsetup.

Now requires you to specifically change the GYP_GENERATORS to specify Ninja. The original change broke because gyp ran for both make and ninja and the webkit bot determines whether to use ninja by the presence of build.ninja (thanks to Peter for figuring this out)

BUG=137569,136693


Review URL: https://chromiumcodereview.appspot.com/10827073

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148790 0039d316-1c4b-4281-b951-d872f2087c98
4 files changed