Cannot use Handle<T>::cast in Unique<T>::cast since it will try to do a T::cast (and its typecheck)…

Cannot use Handle<T>::cast in Unique<T>::cast since it will try to do a T::cast (and its typecheck) concurrently, which is unsafe concurrently on moving values

BUG=

Committed: https://crrev.com/bac0853dfbf1ad2f7f5cf39fd4e5f0ec691155b6
Cr-Commit-Position: refs/heads/master@{#27324}

[Toon Verwaest, 2015-03-19 20:34:27]

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

[Toon Verwaest, 2015-03-19 20:34:28]

PTAL

[Yang, 2015-03-19 20:38:37]

lgtm

[Toon Verwaest, 2015-03-19 20:39:03]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-03-19 20:39:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1022943002/1

[commit-bot: I haz the power, 2015-03-19 21:17:11]

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

[commit-bot: I haz the power, 2015-03-19 21:17:13]

Try jobs failed on following builders:
  v8_linux_dbg on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_dbg/builds/3177)

[Toon Verwaest, 2015-03-19 21:29:35]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2015-03-19 21:29:35]

The patchset sent to the CQ was uploaded after l-g-t-m from yangguo@chromium.org
Link to the patchset: https://codereview.chromium.org/1022943002/#ps20001
(title: "Make Unique a friend of Handle and directly access location_")

[Toon Verwaest, 2015-03-19 21:35:03]

The CQ bit was unchecked by verwaest@chromium.org

[Toon Verwaest, 2015-03-19 21:35:04]

The CQ bit was checked by verwaest@chromium.org

[commit-bot: I haz the power, 2015-03-19 21:36:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1022943002/20001

[commit-bot: I haz the power, 2015-03-19 21:50:27]

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

[commit-bot: I haz the power, 2015-03-19 21:50:27]

Try jobs failed on following builders:
  v8_linux_gcc_compile_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_gcc_compile_rel/bu...)

[Toon Verwaest, 2015-03-19 23:17:00]

The CQ bit was checked by verwaest@chromium.org

[Toon Verwaest, 2015-03-19 23:17:01]

The patchset sent to the CQ was uploaded after l-g-t-m from yangguo@chromium.org
Link to the patchset: https://codereview.chromium.org/1022943002/#ps40001
(title: "Locally allow handle deref")

[commit-bot: I haz the power, 2015-03-19 23:17:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1022943002/40001

[commit-bot: I haz the power, 2015-03-19 23:54:12]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-03-19 23:54:24]

Patchset 3 (id:??) landed as
https://crrev.com/bac0853dfbf1ad2f7f5cf39fd4e5f0ec691155b6
Cr-Commit-Position: refs/heads/master@{#27324}