It's basically like C++'s #include but in JS.

Why write 1 language when you can write 2?!

R=maruel@chromium.org
BUG=540977

Review URL: https://codereview.chromium.org/1394563003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@297065 0039d316-1c4b-4281-b951-d872f2087c98