Set up isolate in CFXJS_Engine's constructor

Set up isolate in CFXJS_Engine's constructor

CFXJS_Engine class should always be constructed with an isolate, except
for its subclasses which may need to create an isolate by themselves.

Move SetIsolate() function to be protected so that only subclasses can
access it.

Committed: https://pdfium.googlesource.com/pdfium/+/0b2a9874bddf44b4226fcbafa9ce159a9b3735a8

[Wei Li, 2016-09-21 17:40:13]

The CQ bit was checked by weili@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-09-21 17:40:22]

Dry run: 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, 2016-09-21 17:54:12]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-09-21 17:54:13]

Dry run: This issue passed the CQ dry run.

[Wei Li, 2016-09-21 17:55:59]

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

[Wei Li, 2016-09-21 17:56:00]

pls review, thanks

[Tom Sepez, 2016-09-21 18:09:40]

Ok, this is a little bit cleaner. LGTM.

[Wei Li, 2016-09-21 18:50:24]

The CQ bit was checked by weili@chromium.org

[commit-bot: I haz the power, 2016-09-21 18:50:27]

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, 2016-09-21 18:50:48]

Description was changed from

==========
Set up isolate in CFXJS_Engine's constructor

CFXJS_Engine class should always be constructed with an isolate, except
for its subclasses which may need to create an isolate by themselves.

Move SetIsolate() function to be protected so that only subclasses can
access it.
==========

to

==========
Set up isolate in CFXJS_Engine's constructor

CFXJS_Engine class should always be constructed with an isolate, except
for its subclasses which may need to create an isolate by themselves.

Move SetIsolate() function to be protected so that only subclasses can
access it.

Committed:
https://pdfium.googlesource.com/pdfium/+/0b2a9874bddf44b4226fcbafa9ce159a9b37...
==========

[commit-bot: I haz the power, 2016-09-21 18:50:48]

Committed patchset #1 (id:1) as
https://pdfium.googlesource.com/pdfium/+/0b2a9874bddf44b4226fcbafa9ce159a9b37...