Fixing a hard dependency on dom_distiller_core.

Fixing a hard dependency on dom_distiller_core.

BUG=546142
Committed: https://crrev.com/8edc0eb233ddea494ea3e30a79b07ec7e4fdb604
Cr-Commit-Position: refs/heads/master@{#360329}

[noyau (Ping after 24h), 2015-11-18 13:00:18]

noyau@chromium.org changed reviewers:
+ sdefresne@chromium.org

[noyau (Ping after 24h), 2015-11-18 13:00:19]

Chased this issue with blundell@, I now know all about hard dependencies in gyp.
Yay!

[sdefresne, 2015-11-18 13:57:35]

lgtm

[noyau (Ping after 24h), 2015-11-18 14:00:00]

The CQ bit was checked by noyau@chromium.org

[commit-bot: I haz the power, 2015-11-18 14:00:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1459583002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1459583002/1

[commit-bot: I haz the power, 2015-11-18 14:02:45]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-18 14:02:46]

Try jobs failed on following builders:
  win_chromium_compile_dbg_ng on tryserver.chromium.win (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.win/builders/win_chromium_comp...)

[noyau (Ping after 24h), 2015-11-18 14:38:31]

The CQ bit was checked by noyau@chromium.org

[commit-bot: I haz the power, 2015-11-18 14:39:07]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1459583002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1459583002/1

[commit-bot: I haz the power, 2015-11-18 14:48:57]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-18 14:50:03]

Patchset 1 (id:??) landed as
https://crrev.com/8edc0eb233ddea494ea3e30a79b07ec7e4fdb604
Cr-Commit-Position: refs/heads/master@{#360329}