Update GN keywords for emacs syntax highlighting

Updates the list of keywords to cover the latest version of GN.

Change-Id: I32bad59603515e88db1687c12b7696db6ef4ebce
Reviewed-on: https://chromium-review.googlesource.com/549234
Commit-Queue: Kevin Peng <kevpeng@google.com>
Reviewed-by: Elliot Glaysher <erg@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#485016}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 86c29e88b6bc604e0f168ad0a22982f9e2db0506
1 file changed
tree: 013a30e9e62e378e31b7bfed50b39518962d982a
  1. tools/