[Merge to 54] Fixup CPDFSDK_PageView and CPDF_Page interactions.

[Merge to 54] Fixup CPDFSDK_PageView and CPDF_Page interactions.

There are several issues when CPDFSDK_PageView and CPDF_Page interact,
especially around deletion. This Cl fixes up several places where things
go wrong working with these objects.

BUG=chromium:632709
R=tsepez@chromium.org

Review-Url: https://codereview.chromium.org/2319663002
Committed: https://pdfium.googlesource.com/pdfium/+/5f909eefc176feb7c8cf97afe38982025e9238cd

[dsinclair, 2016-09-13 18:23:32]

dsinclair@chromium.org changed reviewers:
+ tsepez@chromium.org, weili@chromium.org

[dsinclair, 2016-09-13 18:23:33]

PTAL.

https://codereview.chromium.org/2340523002/diff/1/fpdfsdk/include/fsdk_mgr.h
File fpdfsdk/include/fsdk_mgr.h (right):

https://codereview.chromium.org/2340523002/diff/1/fpdfsdk/include/fsdk_mgr.h#...
fpdfsdk/include/fsdk_mgr.h:626: bool m_bOwnsPage;
There was a merge conflict here as master removes most of this ifdef.

[Tom Sepez, 2016-09-13 18:39:36]

lgtm

[dsinclair, 2016-09-13 18:50:26]

Description was changed from

==========
[Merge to 54] Fixup CPDFSDK_PageView and CPDF_Page interactions.

There are several issues when CPDFSDK_PageView and CPDF_Page interact,
especially around deletion. This Cl fixes up several places where things
go wrong working with these objects.

BUG=chromium:632709

Review-Url: https://codereview.chromium.org/2319663002
==========

to

==========
[Merge to 54] Fixup CPDFSDK_PageView and CPDF_Page interactions.

There are several issues when CPDFSDK_PageView and CPDF_Page interact,
especially around deletion. This Cl fixes up several places where things
go wrong working with these objects.

BUG=chromium:632709
R=tsepez@chromium.org

Review-Url: https://codereview.chromium.org/2319663002
Committed:
https://pdfium.googlesource.com/pdfium/+/5f909eefc176feb7c8cf97afe38982025e92...
==========

[dsinclair, 2016-09-13 18:50:31]

Committed patchset #1 (id:1) manually as
5f909eefc176feb7c8cf97afe38982025e9238cd (presubmit successful).