binding: Makes Dictionary handle a possible exception in [[Get]].

binding: Makes Dictionary handle a possible exception in [[Get]].

Dictionary retrieves a dictionary member through the [[Get]] internal
method of the dictionary object.  Since the properties can be accessor
properties, arbitrary script may run in [[Get]], so we have to handle
a possible exception in [[Get]].

The right fix is to propagate the exception up to the caller,
however, there are so many callers and the issue is urgent.
So simply swallowing all the exceptions in this CL, and fix it
re-throws in a follow-up CL.

BUG=644237
Review-Url: https://codereview.chromium.org/2496533002
Cr-Commit-Position: refs/heads/master@{#431848}
(cherry picked from commit 5f971b7bafe1c9a8574e66525b593644e4b9d658)

Committed: https://chromium.googlesource.com/chromium/src/+/f924a45a1c9276a2f145ece28b6d645839997981

[Yuki, 2016-11-25 06:08:47]

Description was changed from

==========
binding: Makes Dictionary handle a possible exception in [[Get]].

Dictionary retrieves a dictionary member through the [[Get]] internal
method of the dictionary object.  Since the properties can be accessor
properties, arbitrary script may run in [[Get]], so we have to handle
a possible exception in [[Get]].

The right fix is to propagate the exception up to the caller,
however, there are so many callers and the issue is urgent.
So simply swallowing all the exceptions in this CL, and fix it
re-throws in a follow-up CL.

BUG=644237

Review-Url: https://codereview.chromium.org/2496533002
Cr-Commit-Position: refs/heads/master@{#431848}
(cherry picked from commit 5f971b7bafe1c9a8574e66525b593644e4b9d658)
==========

to

==========
binding: Makes Dictionary handle a possible exception in [[Get]].

Dictionary retrieves a dictionary member through the [[Get]] internal
method of the dictionary object.  Since the properties can be accessor
properties, arbitrary script may run in [[Get]], so we have to handle
a possible exception in [[Get]].

The right fix is to propagate the exception up to the caller,
however, there are so many callers and the issue is urgent.
So simply swallowing all the exceptions in this CL, and fix it
re-throws in a follow-up CL.

BUG=644237

Review-Url: https://codereview.chromium.org/2496533002
Cr-Commit-Position: refs/heads/master@{#431848}
(cherry picked from commit 5f971b7bafe1c9a8574e66525b593644e4b9d658)

Committed:
https://chromium.googlesource.com/chromium/src/+/f924a45a1c9276a2f145ece28b6d...
==========

[Yuki, 2016-11-25 06:08:48]

Committed patchset #1 (id:1) manually as
f924a45a1c9276a2f145ece28b6d645839997981.