Delay printing OOP PDF until loading is complete

Delay printing OOP PDF until loading is complete

This delays the print command in OOP PDF. This simplifies the use of the OOP PDF scripting API so print can be called immediately before the document is loaded.

BUG=303491
Committed: https://crrev.com/b59ab7ac8433652b921f2a93289c6d13b862e5a0
Cr-Commit-Position: refs/heads/master@{#312524}

[raymes, 2015-01-22 00:04:08]

raymes@chromium.org changed reviewers:
+ sammc@chromium.org

[Sam McNally, 2015-01-22 00:07:25]

lgtm

[raymes, 2015-01-22 00:15:10]

The CQ bit was checked by raymes@chromium.org

[commit-bot: I haz the power, 2015-01-22 00:16:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/865023002/1

[commit-bot: I haz the power, 2015-01-22 02:08:17]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-22 02:09:27]

Patchset 1 (id:??) landed as
https://crrev.com/b59ab7ac8433652b921f2a93289c6d13b862e5a0
Cr-Commit-Position: refs/heads/master@{#312524}