Convert LayoutTests/http/tests/resources/testharness.js from CRLF to LF

It's not possible to land patches using CQ for CRLF files:
https://codereview.chromium.org/213283002/

Also convert testharnessreport.js while in the area.

BUG=355489
TBR=dpranke@chromium.org

Review URL: https://codereview.chromium.org/214133003

git-svn-id: svn://svn.chromium.org/blink/trunk@170121 bbb929c8-8fbe-4397-9dbb-9b2b20218538