Linux: add an option to use system jsoncpp

BUG=none

Review URL: https://codereview.chromium.org/11737009

git-svn-id: http://src.chromium.org/svn/trunk/src/third_party/jsoncpp@174979 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed
tree: 89a0228fc497e04effb9e0d6cc09950796f8a2eb
  1. LICENSE
  2. README.chromium
  3. jsoncpp.gyp
  4. overrides/