Update V8 DEPS.

Update V8 DEPS.

Rolling v8/tools/clang to 39ed8f11082b1f0a226436955efcacc38aed2d5e

TBR=machenbach@chromium.org

Committed: https://crrev.com/ed6885235cb6fb788b7394003242f05288e35eec
Cr-Commit-Position: refs/heads/master@{#28023}

[v8-autoroll, 2015-04-23 03:01:07]

The CQ bit was checked by v8-autoroll@chromium.org

[commit-bot: I haz the power, 2015-04-23 03:01:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1106553003/1

[commit-bot: I haz the power, 2015-04-23 03:11:12]

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

[commit-bot: I haz the power, 2015-04-23 03:11:13]

Try jobs failed on following builders:
  v8_linux_chromium_gn_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_chromium_gn_rel/bu...)

[Dirk Pranke, 2015-04-23 04:33:37]

On 2015/04/23 03:11:13, I haz the power (commit-bot) wrote:
> Try jobs failed on following builders:
>   v8_linux_chromium_gn_rel on tryserver.v8 (JOB_FAILED,
>
http://build.chromium.org/p/tryserver.v8/builders/v8_linux_chromium_gn_rel/bu...)

Looks like the v8 GN bots will be broken until chromium's lkcr branch rolls past
#326448 / c32d8a85648b9e19320368f1dd91ddaca814fd0e 

( https://codereview.chromium.org/1101593005 ).

I have no idea how lkcr updates these days, but it looks like it updates
relatively often, so hopefully this will be updated in a couple hours, before it
causes any real inconvenience for the v8 team. If that's not the case, and the
brokenness is annoying, please feel free to revert
https://codereview.chromium.org/1084793005/.

[Michael Achenbach, 2015-04-23 07:19:33]

The CQ bit was checked by machenbach@chromium.org

[commit-bot: I haz the power, 2015-04-23 07:19:44]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1106553003/1

[commit-bot: I haz the power, 2015-04-23 08:14:16]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-23 08:14:23]

Patchset 1 (id:??) landed as
https://crrev.com/ed6885235cb6fb788b7394003242f05288e35eec
Cr-Commit-Position: refs/heads/master@{#28023}