Roll PDFium revision to 3dedace and use the new init API.

Roll PDFium revision to 3dedace and use the new init API.

Also pick up another bug fix in the DEPS roll.
https://pdfium.googlesource.com/pdfium.git/+log/b8a0747..3dedace

BUG=531339, 537173
Committed: https://crrev.com/b331e81dd0357eb0c483cfac3e3fe2a594fe54ef
Cr-Commit-Position: refs/heads/master@{#352254}

[Lei Zhang, 2015-10-03 00:05:26]

thestig@chromium.org changed reviewers:
+ tsepez@chromium.org

[Tom Sepez, 2015-10-03 01:07:13]

lgtm

https://codereview.chromium.org/1383783003/diff/1/pdf/pdfium/pdfium_engine.cc
File pdf/pdfium/pdfium_engine.cc (right):

https://codereview.chromium.org/1383783003/diff/1/pdf/pdfium/pdfium_engine.cc...
pdf/pdfium/pdfium_engine.cc:597: config.m_pIsolate = v8::Isolate::GetCurrent();
What do we give up if we pass a nullptr here, forcing each runtime to have its
own isolate, as a last-ditch effort to get the thing out the door?

[Tom Sepez, 2015-10-03 01:07:15]

lgtm

lgtm

[Lei Zhang, 2015-10-03 01:09:05]

https://codereview.chromium.org/1383783003/diff/1/pdf/pdfium/pdfium_engine.cc
File pdf/pdfium/pdfium_engine.cc (right):

https://codereview.chromium.org/1383783003/diff/1/pdf/pdfium/pdfium_engine.cc...
pdf/pdfium/pdfium_engine.cc:597: config.m_pIsolate = v8::Isolate::GetCurrent();
On 2015/10/03 01:07:13, Tom Sepez wrote:
> What do we give up if we pass a nullptr here, forcing each runtime to have its
> own isolate, as a last-ditch effort to get the thing out the door?

Possibly just giving up some efficiency, but locally I'm having trouble testing
the website for the bug even without this CL.

[Lei Zhang, 2015-10-03 02:36:05]

I have other issues with reproducing the bug in a debug build, but I can in a
release build. I think I can fix this, but food calls...

[Lei Zhang, 2015-10-03 08:10:21]

The CQ bit was checked by thestig@chromium.org

[commit-bot: I haz the power, 2015-10-03 08:10:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1383783003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1383783003/1

[commit-bot: I haz the power, 2015-10-03 12:10:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-03 12:11:04]

Patchset 1 (id:??) landed as
https://crrev.com/b331e81dd0357eb0c483cfac3e3fe2a594fe54ef
Cr-Commit-Position: refs/heads/master@{#352254}