Roll DOM Distiller JavaScript distribution package

Diff since last roll:
https://github.com/chromium/dom-distiller/compare/54d05ba208...6c16f14405

Picked up changes:
6c16f14 Warm up image cache for data URI used in tests
301ea1e Fix malformed test filter
9b606cb Remove files for drone.io
7e3b63e Fix schema.org article matching

BUG=619852

Review-Url: https://codereview.chromium.org/2173883004
Cr-Commit-Position: refs/heads/master@{#407304}
2 files changed