[chromedriver] Fix converting embedded capabilities object to JSON.

This allows Java to find a given Chrome exe via the capabilities.
Patch from Shuotao Gao <chrisgao@chromium.org>.
Review URL: https://codereview.chromium.org/11635019

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/webdriver@173967 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
2 files changed
tree: 86ed03e78b2bb8efc2aea7babfe272168e0afb0c
  1. common/
  2. keystore
  3. LICENSE
  4. patch.diff
  5. README.chromium
  6. test-standalone.jar