Namespace internal extension JavaScript modules with extensions:: so that they

Namespace internal extension JavaScript modules with extensions:: so that they
can be identified in stack traces, and filtered out when showing to developers.

BUG=21734
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=222149

[koz (OOO until 15th September), 2013-09-09 18:35:23]

lgtm

[not at google - send to devlin, 2013-09-09 18:44:31]

devlin showed me in v8.h that AsciiValue is deprecated so I've changed it do use
Utf8Value.

[commit-bot: I haz the power, 2013-09-09 18:45:34]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kalman@chromium.org/23604050/9001

[commit-bot: I haz the power, 2013-09-09 18:45:38]

Failed to trigger a try job on linux_rel
HTTP Error 400: Bad Request

[not at google - send to devlin, 2013-09-09 18:45:51]

Oops replaced the wrong one. Ah well might as well do them all.

[commit-bot: I haz the power, 2013-09-09 18:46:13]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kalman@chromium.org/23604050/12001

[commit-bot: I haz the power, 2013-09-09 21:30:54]

Retried try job too often on linux_aura for step(s) browser_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_aura...

[not at google - send to devlin, 2013-09-09 21:56:11]

lgtm devlin's fix to his tests :)

[commit-bot: I haz the power, 2013-09-09 21:56:30]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/kalman@chromium.org/23604050/15004

[commit-bot: I haz the power, 2013-09-10 00:22:19]

Change committed as 222149