DevTools: [CodeMirror] update match brackets plugin

This patch updates match brackets plugin to the latest version
from @c1df890ac6. This version does not iterate through long lines,
so the patch switches on match brackets highlight in the
long lines mode.

BUG=

Review URL: https://chromiumcodereview.appspot.com/18191012

git-svn-id: svn://svn.chromium.org/blink/trunk@153311 bbb929c8-8fbe-4397-9dbb-9b2b20218538