Use testharnessreport.js for geometry-interfaces-dom-matrix-* test.

In that case, we can avoid a pixel test by using testharnessreport.js.

BUG=388780

Review URL: https://codereview.chromium.org/466183006

git-svn-id: svn://svn.chromium.org/blink/trunk@180858 bbb929c8-8fbe-4397-9dbb-9b2b20218538