Allow the PDF extension for chrome://print pages.

Allow the PDF extension for chrome://print pages.

We have an experiment running that would disable parser-inserted usage
of 'chrome-extension://' URLs unless explicitly whitelisted. This breaks
the print preview page, which relies on the PDF extension URLs inside an
HTML import. So. This patch adds a mechanism for whitelisting that
extension URL for the print preview page.

BUG=667224
R=tsepez@chromium.org

Committed: https://crrev.com/c5dd67fc5244bc8ee3fa74bea9835a0d054d2a37
Cr-Commit-Position: refs/heads/master@{#434770}

[Mike West, 2016-11-24 12:29:34]

WDYT, Tom?

[Mike West, 2016-11-24 12:29:42]

The CQ bit was checked by mkwst@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-11-24 12:30:07]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-24 15:40:15]

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

[commit-bot: I haz the power, 2016-11-24 15:40:15]

Dry run: Try jobs failed on following builders:
  cast_shell_linux on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/cast_shell_linu...)

[Mike West, 2016-11-28 15:36:22]

mkwst@chromium.org changed reviewers:
+ jochen@chromium.org

[Mike West, 2016-11-28 15:36:23]

Jochen, perhaps you could stamp this, on the off chance that Tom approves it
overnight? :)

[Mike West, 2016-11-28 15:36:41]

mkwst@chromium.org changed required reviewers:
+ tsepez@chromium.org

[jochen (gone - plz use gerrit), 2016-11-28 15:37:19]

stampety-stamp lgtm

[Tom Sepez, 2016-11-28 17:13:33]

lgtm

[Mike West, 2016-11-28 21:03:00]

The CQ bit was checked by mkwst@chromium.org

[commit-bot: I haz the power, 2016-11-28 21:04:18]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-11-28 23:25:36]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1480366980959680, "parent_rev":
"d16ab5ce8d00b5c258595566c1d381650c194172", "commit_rev":
"901d29fc04c4240da7412891020586b7dd205357"}

[commit-bot: I haz the power, 2016-11-28 23:26:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-28 23:29:51]

Description was changed from

==========
Allow the PDF extension for chrome://print pages.

We have an experiment running that would disable parser-inserted usage
of 'chrome-extension://' URLs unless explicitly whitelisted. This breaks
the print preview page, which relies on the PDF extension URLs inside an
HTML import. So. This patch adds a mechanism for whitelisting that
extension URL for the print preview page.

BUG=667224
R=tsepez@chromium.org
==========

to

==========
Allow the PDF extension for chrome://print pages.

We have an experiment running that would disable parser-inserted usage
of 'chrome-extension://' URLs unless explicitly whitelisted. This breaks
the print preview page, which relies on the PDF extension URLs inside an
HTML import. So. This patch adds a mechanism for whitelisting that
extension URL for the print preview page.

BUG=667224
R=tsepez@chromium.org

Committed: https://crrev.com/c5dd67fc5244bc8ee3fa74bea9835a0d054d2a37
Cr-Commit-Position: refs/heads/master@{#434770}
==========

[commit-bot: I haz the power, 2016-11-28 23:29:52]

Patchset 1 (id:??) landed as
https://crrev.com/c5dd67fc5244bc8ee3fa74bea9835a0d054d2a37
Cr-Commit-Position: refs/heads/master@{#434770}