Print absolutely positioned objects correctly when sized against the viewport.

Print absolutely positioned objects correctly when sized against the viewport.

Remove special code for printing from computeLogicalHeight() and
updateLogicalWidth() in LayoutView. The size of the containing block
established by the viewport should be equal to the size of the page, not the
size of the document.

Return the correct page size from LayoutView::layoutSize() instead of 0x0.
Special code is still needed here, because we cannot use FrameView to get the
page size (because the size of the FrameView corresponds to what we have on the
screen).

BUG=544794
R=leviw@chromium.org

Committed: https://crrev.com/fe1888ab535da3df53c670f5e6a68bd9a87158ce
Cr-Commit-Position: refs/heads/master@{#355760}

[leviw_travelin_and_unemployed, 2015-10-22 17:30:05]

The CQ bit was checked by leviw@chromium.org

[leviw_travelin_and_unemployed, 2015-10-22 17:30:05]

lgtm

[commit-bot: I haz the power, 2015-10-22 17:30:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1423643002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1423643002/1

[mstensho (USE GERRIT), 2015-10-22 19:28:34]

The CQ bit was unchecked by mstensho@opera.com

[mstensho (USE GERRIT), 2015-10-22 19:30:51]

I think this CL is going to affect some layout tree dump expectations for tests
that are currently waiting for rebaselining because of
https://codereview.chromium.org/1413573004/

Better get those rebaselined first, before attempting to land this one.

[mstensho (USE GERRIT), 2015-10-23 08:02:03]

The CQ bit was checked by mstensho@opera.com

[mstensho (USE GERRIT), 2015-10-23 08:02:04]

The patchset sent to the CQ was uploaded after l-g-t-m from leviw@chromium.org
Link to the patchset: https://codereview.chromium.org/1423643002/#ps40001
(title: "Need to rebaseline some tests, and it has to be done manually because
of more specific entries alre…")

[commit-bot: I haz the power, 2015-10-23 08:02:30]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1423643002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1423643002/40001

[commit-bot: I haz the power, 2015-10-23 09:54:59]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-10-23 09:55:37]

Patchset 3 (id:??) landed as
https://crrev.com/fe1888ab535da3df53c670f5e6a68bd9a87158ce
Cr-Commit-Position: refs/heads/master@{#355760}