Change printing stale test expectations lines.

-Check in the API key. Turns out it's kosher to check this in to a
public repo.
-Manually walk TestExpectations instead of using the python machinery.
This makes it easier to print out the whole line and to print them
in the order in which they appear in TestExpectations.

R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/37873002

git-svn-id: svn://svn.chromium.org/blink/trunk@160379 bbb929c8-8fbe-4397-9dbb-9b2b20218538