chromedriver: Use classes in third_party/zlib/google

BUG=351823
TEST=chromedriver_unittests

Review URL: https://codereview.chromium.org/209743002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@259129 0039d316-1c4b-4281-b951-d872f2087c98