Revert of Make the CPDFXFA_App non-global

Revert of Make the CPDFXFA_App non-global (patchset #3 id:80001 of https://codereview.chromium.org/2416753002/ )

Reason for revert:
https://build.chromium.org/p/client.pdfium/builders/linux_xfa_asan_lsan/builds/112/steps/embeddertests/logs/stdio

msan is sad.

Original issue's description:
> Make the CPDFXFA_App non-global
> 
> This CL changes CPDFXFA_App from a global object to a child of the
> CPDFXFA_Document objects.
> 
> BUG=pdfium:623
> 
> Committed: https://pdfium.googlesource.com/pdfium/+/abefb79577b32d291d14d7e01a70f6f8cf213bd3

TBR=tsepez@chromium.org,thestig@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=pdfium:623
Committed: https://pdfium.googlesource.com/pdfium/+/b685e6471075bebd26711bc183de3128f54932e3

[dsinclair, 2016-10-13 17:56:53]

The CQ bit was checked by dsinclair@chromium.org

[dsinclair, 2016-10-13 17:56:53]

Created Revert of Make the CPDFXFA_App non-global

[commit-bot: I haz the power, 2016-10-13 17:56:57]

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, 2016-10-13 17:57:03]

Description was changed from

==========
Revert of Make the CPDFXFA_App non-global (patchset #3 id:80001 of
https://codereview.chromium.org/2416753002/ )

Reason for revert:
https://build.chromium.org/p/client.pdfium/builders/linux_xfa_asan_lsan/build...

msan is sad.

Original issue's description:
> Make the CPDFXFA_App non-global
> 
> This CL changes CPDFXFA_App from a global object to a child of the
> CPDFXFA_Document objects.
> 
> BUG=pdfium:623
> 
> Committed:
https://pdfium.googlesource.com/pdfium/+/abefb79577b32d291d14d7e01a70f6f8cf21...

TBR=tsepez@chromium.org,thestig@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=pdfium:623
==========

to

==========
Revert of Make the CPDFXFA_App non-global (patchset #3 id:80001 of
https://codereview.chromium.org/2416753002/ )

Reason for revert:
https://build.chromium.org/p/client.pdfium/builders/linux_xfa_asan_lsan/build...

msan is sad.

Original issue's description:
> Make the CPDFXFA_App non-global
> 
> This CL changes CPDFXFA_App from a global object to a child of the
> CPDFXFA_Document objects.
> 
> BUG=pdfium:623
> 
> Committed:
https://pdfium.googlesource.com/pdfium/+/abefb79577b32d291d14d7e01a70f6f8cf21...

TBR=tsepez@chromium.org,thestig@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=pdfium:623

Committed:
https://pdfium.googlesource.com/pdfium/+/b685e6471075bebd26711bc183de3128f549...
==========

[commit-bot: I haz the power, 2016-10-13 17:57:04]

Committed patchset #1 (id:1) as
https://pdfium.googlesource.com/pdfium/+/b685e6471075bebd26711bc183de3128f549...