Update V8 to version 6.7.23.

Summary of changes available at:
https://chromium.googlesource.com/v8/v8/+log/c2a9fb06..b2a75aa2

Please follow these instructions for assigning/CC'ing issues:
https://github.com/v8/v8/wiki/Triaging%20issues

Please close rolling in case of a roll revert:
https://v8-roll.appspot.com/
This only works with a Google account.

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel;master.tryserver.chromium.android:android_optional_gpu_tests_rel

[email protected],[email protected],[email protected],[email protected]

Change-Id: I75050e8ecd6688effeaa88e7c7d37e8b221e4da8
Reviewed-on: https://chromium-review.googlesource.com/952982
Reviewed-by: v8 autoroll <[email protected]>
Commit-Queue: v8 autoroll <[email protected]>
Cr-Commit-Position: refs/heads/master@{#541409}
diff --git a/DEPS b/DEPS
index 256de34..c6735da0 100644
--- a/DEPS
+++ b/DEPS
@@ -83,7 +83,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'c2a9fb06f14acd9d393885973e3722ee3d0609ac',
+  'v8_revision': 'b2a75aa261671bca28890a5dfbce87d96d8eaef4',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.