Debugger: do not expose global object.

Debugger: do not expose global object.

Committed: https://crrev.com/f9a3e6a6aacd53f13a1571a55bbb066b223295ff
Cr-Commit-Position: refs/heads/master@{#30149}

[Yang, 2015-08-13 08:19:46]

yangguo@chromium.org changed reviewers:
+ bmeurer@chromium.org

[Yang, 2015-08-13 08:19:46]

This is necessary for https://codereview.chromium.org/1287243002, because we
can't use global objects as map keys.

[Benedikt Meurer, 2015-08-13 08:20:28]

lgtm

[Yang, 2015-08-13 09:21:41]

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

[commit-bot: I haz the power, 2015-08-13 09:21:46]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1290063002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1290063002/1

[commit-bot: I haz the power, 2015-08-13 10:16:57]

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

[commit-bot: I haz the power, 2015-08-13 10:16:58]

Dry run: This issue passed the CQ dry run.

[Yang, 2015-08-13 10:18:02]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-08-13 10:18:11]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1290063002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1290063002/1

[commit-bot: I haz the power, 2015-08-13 10:20:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-08-13 10:20:12]

Patchset 1 (id:??) landed as
https://crrev.com/f9a3e6a6aacd53f13a1571a55bbb066b223295ff
Cr-Commit-Position: refs/heads/master@{#30149}