Fix windows margin scaling bug

Fix windows margin scaling bug

When printing to local printers Windows uses the computed page size.
Page size is scaled when using print scaling to force blink to reflow
the page. Need to unscale the page size before sending it back to
Windows so that Windows knows the correct page size.

BUG=686384
Review-Url: https://codereview.chromium.org/2667793002
Cr-Commit-Position: refs/heads/master@{#447647}
Committed: https://chromium.googlesource.com/chromium/src/+/8f96566d8d7d712d4d11ca04e4f3641048362276

[rbpotter, 2017-01-30 22:44:24]

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

[commit-bot: I haz the power, 2017-01-30 22:44:55]

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

[rbpotter, 2017-01-30 22:52:28]

Description was changed from

==========
Fix windows margin scaling bug

When printing to local printers Windows uses the computed page size.
Page size is scaled when using print scaling to force blink to reflow
the page. Need to unscale the page size before sending it back to
Windows so that Windows knows the correct page size.

BUG=686384
==========

to

==========
Fix windows margin scaling bug

When printing to local printers Windows uses the computed page size.
Page size is scaled when using print scaling to force blink to reflow
the page. Need to unscale the page size before sending it back to
Windows so that Windows knows the correct page size.

BUG=686384
==========

[rbpotter, 2017-01-30 22:52:28]

rbpotter@chromium.org changed reviewers:
+ vitalybuka@chromium.org

[commit-bot: I haz the power, 2017-01-30 23:39:06]

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

[commit-bot: I haz the power, 2017-01-30 23:39:07]

Dry run: This issue passed the CQ dry run.

[Vitaly Buka (NO REVIEWS), 2017-02-01 22:50:36]

LGTM
how does it work for linux or chromeos?

[rbpotter, 2017-02-01 22:52:20]

On 2017/02/01 22:50:36, Vitaly Buka wrote:
> LGTM
> how does it work for linux or chromeos?

Thanks! Linux/chromeos pass in nullptr for page_size_in_dpi, so this code
never executes for those platforms.

[rbpotter, 2017-02-01 22:53:07]

The CQ bit was checked by rbpotter@chromium.org

[commit-bot: I haz the power, 2017-02-01 22:53:46]

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, 2017-02-01 23:55:54]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485989587526240, "parent_rev":
"3330b07019979cfd5794794785b2d2bb6e7ca8d3", "commit_rev":
"8f96566d8d7d712d4d11ca04e4f3641048362276"}

[commit-bot: I haz the power, 2017-02-01 23:56:29]

Description was changed from

==========
Fix windows margin scaling bug

When printing to local printers Windows uses the computed page size.
Page size is scaled when using print scaling to force blink to reflow
the page. Need to unscale the page size before sending it back to
Windows so that Windows knows the correct page size.

BUG=686384
==========

to

==========
Fix windows margin scaling bug

When printing to local printers Windows uses the computed page size.
Page size is scaled when using print scaling to force blink to reflow
the page. Need to unscale the page size before sending it back to
Windows so that Windows knows the correct page size.

BUG=686384

Review-Url: https://codereview.chromium.org/2667793002
Cr-Commit-Position: refs/heads/master@{#447647}
Committed:
https://chromium.googlesource.com/chromium/src/+/8f96566d8d7d712d4d11ca04e4f3...
==========

[commit-bot: I haz the power, 2017-02-01 23:56:30]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/8f96566d8d7d712d4d11ca04e4f3...