Update V8 to version 5.7.495.

Summary of changes available at:
https://chromium.googlesource.com/v8/v8/+log/f8e1c4b6..4c672f28

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

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Review-Url: https://codereview.chromium.org/2640733002
Cr-Commit-Position: refs/heads/master@{#444305}
diff --git a/DEPS b/DEPS
index c992eb3d..d1956b6f 100644
--- a/DEPS
+++ b/DEPS
@@ -44,7 +44,7 @@
   # 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': 'f8e1c4b6e4e304605989714bd4a9737b8b0feea4',
+  'v8_revision': '4c672f28bb3980d31dd916a426a5e1138775f8d1',
   # 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.