GitLab

Adding tests for error reporting and wrapper, the rest will follow.

BUG=164227
TEST=No

Review URL: https://chromiumcodereview.appspot.com/23477006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221239 0039d316-1c4b-4281-b951-d872f2087c98