commit 00b5593b50a10f363c9128f25f0499e1ce1f3bf1
author Wei Li <weili@chromium.org> Fri Feb 23 01:23:14 2018
committer Commit Bot <commit-bot@chromium.org> Fri Feb 23 01:23:14 2018
tree 8f96111d9dd340467becd363611958da7702264a
parent 2181305023501418e22e421c3ad7a2ecb0322b4d

Support subframe printing without pagination

When printing a cross process subframe such as an out-of-process
iframe, the content in that frame should not fit into a page size.
Instead it should be constrained by its parent. In addition, if it
being scrolled, printing should start from the scrolled offset.

This CL passes in and through a cross process subframe flag to
indicate such case, for which we don't force printing layout
or pagination. So it can be printed as is.
Also in this CL, SetPrinting() is refactored into StartPrinting()
and EndPrinting() to make the purposes of the APIs and their
parameters more clear.

BUG=455764

Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2
Change-Id: I9dc67068bf305a580835cb4d11666d09ff4d449a
Reviewed-on: https://chromium-review.googlesource.com/923210
Commit-Queue: Wei Li <weili@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538653}