Change the line endings of testharness{,report}.js from CRLF to LF.

No change to the content of these scripts, hence no behavior change expected.

BUG=none
R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/43483002

git-svn-id: svn://svn.chromium.org/blink/trunk@160686 bbb929c8-8fbe-4397-9dbb-9b2b20218538