Add gdb macro for printing v8::Local content.

Add gdb macro for printing v8::Local content.

R=marja@chromium.org

Review-Url: https://codereview.chromium.org/2628293003
Cr-Commit-Position: refs/heads/master@{#42327}
Committed: https://chromium.googlesource.com/v8/v8/+/391f1ac3f5d3f6cda5ab93f44969d44962da4870

[marja, 2017-01-13 12:19:50]

lgtm

[Yang, 2017-01-13 12:21:03]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2017-01-13 12:21:08]

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, 2017-01-13 12:59:31]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484310063474540, "parent_rev":
"83d5b65ae053fb59eeb2cafcc2566e749a3ca4b7", "commit_rev":
"391f1ac3f5d3f6cda5ab93f44969d44962da4870"}

[commit-bot: I haz the power, 2017-01-13 12:59:34]

Description was changed from

==========
Add gdb macro for printing v8::Local content.

R=marja@chromium.org
==========

to

==========
Add gdb macro for printing v8::Local content.

R=marja@chromium.org

Review-Url: https://codereview.chromium.org/2628293003
Cr-Commit-Position: refs/heads/master@{#42327}
Committed:
https://chromium.googlesource.com/v8/v8/+/391f1ac3f5d3f6cda5ab93f44969d44962d...
==========

[commit-bot: I haz the power, 2017-01-13 12:59:35]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/391f1ac3f5d3f6cda5ab93f44969d44962d...