Add ability to pass through IDWriteFactory so sandbox can control how it's constructed

Add ability to pass through IDWriteFactory so sandbox can control how it's constructed

Skia supports receiving a factory after Skia r14000. Plumb
a pointer through here so that the sandbox warmup code, see
https://codereview.chromium.org/217813008 can control how
it's constructed.

R=eae@chromium.org
BUG=333029
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=170669

[eae, 2014-04-02 02:52:47]

LGTM

[eae, 2014-04-02 02:53:05]

The CQ bit was checked by eae@chromium.org

[commit-bot: I haz the power, 2014-04-02 02:53:13]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scottmg@chromium.org/213223003/1

[commit-bot: I haz the power, 2014-04-02 03:02:27]

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

[commit-bot: I haz the power, 2014-04-02 03:02:27]

Try jobs failed on following builders:
  tryserver.blink on blink_presubmit

[scottmg, 2014-04-02 03:42:26]

+dglazkov for OWNERS

[dglazkov, 2014-04-02 16:28:27]

rslgtm.

[scottmg, 2014-04-02 16:29:40]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2014-04-02 16:29:44]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/scottmg@chromium.org/213223003/1

[commit-bot: I haz the power, 2014-04-02 16:41:41]

Change committed as 170669