deps: update V8 to 6.4.388.40

PR-URL: #17489
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>

deps/v8/.gitignore

@@ -70,6 +70,8 @@
 !/third_party/binutils
 !/third_party/eu-strip
 !/third_party/inspector_protocol
+!/third_party/colorama
+/third_party/colorama/src
 /tools/clang
 /tools/gcmole/gcmole-tools
 /tools/gcmole/gcmole-tools.tar.gz
@@ -103,5 +105,6 @@ turbo*.cfg
 turbo*.dot
 turbo*.json
 v8.ignition_dispatches_table.json
+/Default/
 !/third_party/jinja2
 !/third_party/markupsafe

deps/v8/.vpython

@@ -0,0 +1,32 @@
+# This is a vpython "spec" file.
+#
+# It describes patterns for python wheel dependencies of the python scripts in
+# the chromium repo, particularly for dependencies that have compiled components
+# (since pure-python dependencies can be easily vendored into third_party).
+#
+# When vpython is invoked, it finds this file and builds a python VirtualEnv,
+# containing all of the dependencies described in this file, fetching them from
+# CIPD (the "Chrome Infrastructure Package Deployer" service). Unlike `pip`,
+# this never requires the end-user machine to have a working python extension
+# compilation environment. All of these packages are built using:
+#   https://chromium.googlesource.com/infra/infra/+/master/infra/tools/dockerbuild/
+#
+# All python scripts in the repo share this same spec, to avoid dependency
+# fragmentation.
+#
+# If you have depot_tools installed in your $PATH, you can invoke python scripts
+# in this repo by running them as you normally would run them, except
+# substituting `vpython` instead of `python` on the command line, e.g.:
+#   vpython path/to/script.py some --arguments
+#
+# Read more about `vpython` and how to modify this file here:
+#   https://chromium.googlesource.com/infra/infra/+/master/doc/users/vpython.md
+
+python_version: "2.7"
+
+# Needed by third_party/catapult/devil/devil, which is imported by
+# build/android/test_runner.py when running performance tests.
+wheel: <
+  name: "infra/python/wheels/psutil/${vpython_platform}"
+  version: "version:5.2.2"
+>

deps/v8/.ycm_extra_conf.py

@@ -42,7 +42,7 @@
 # Flags from YCM's default config.
 flags = [
 '-DUSE_CLANG_COMPLETER',
-'-std=gnu++11',
+'-std=gnu++14',
 '-x',
 'c++',
 ]

deps/v8/AUTHORS

@@ -1,4 +1,4 @@
-# Below is a list of people and organizations that have contributed
+# Below is a list of people and organizations that have contributed
 # to the V8 project.  Names should be added to the list like so:
 #
 #   Name/Organization <email address>
@@ -31,6 +31,7 @@ StrongLoop, Inc. <*@strongloop.com>
 Facebook, Inc. <*@fb.com>
 Facebook, Inc. <*@oculus.com>
 Vewd Software AS <*@vewd.com>
+Groupon <*@groupon.com>
 
 Aaron Bieber <deftly@gmail.com>
 Abdulla Kamar <abdulla.kamar@gmail.com>
@@ -45,6 +46,7 @@ Andrew Paprocki <andrew@ishiboo.com>
 Andrei Kashcha <anvaka@gmail.com>
 Anna Henningsen <anna@addaleax.net>
 Bangfu Tao <bangfu.tao@samsung.com>
+Ben Coe <ben@npmjs.com>
 Ben Noordhuis <info@bnoordhuis.nl>
 Benjamin Tan <demoneaux@gmail.com>
 Bert Belder <bertbelder@gmail.com>
@@ -54,6 +56,7 @@ Craig Schlenter <craig.schlenter@gmail.com>
 Choongwoo Han <cwhan.tunz@gmail.com>
 Chris Nardi <hichris123@gmail.com>
 Christopher A. Taylor <chris@gameclosure.com>
+Colin Ihrig <cjihrig@gmail.com>
 Daniel Andersson <kodandersson@gmail.com>
 Daniel Bevenius <daniel.bevenius@gmail.com>
 Daniel James <dnljms@gmail.com>
@@ -75,6 +78,7 @@ Ioseb Dzmanashvili <ioseb.dzmanashvili@gmail.com>
 Isiah Meadows <impinball@gmail.com>
 Jaime Bernardo <jaime@janeasystems.com>
 Jan de Mooij <jandemooij@gmail.com>
+Jan Krems <jan.krems@gmail.com>
 Jay Freeman <saurik@saurik.com>
 James Pike <g00gle@chilon.net>
 Jianghua Yang <jianghua.yjh@alibaba-inc.com>
@@ -86,6 +90,7 @@ JunHo Seo <sejunho@gmail.com>
 Kang-Hao (Kenny) Lu <kennyluck@csail.mit.edu>
 Karl Skomski <karl@skomski.com>
 Kevin Gibbons <bakkot@gmail.com>
+Kris Selden <kris.selden@gmail.com>
 Loo Rong Jie <loorongjie@gmail.com>
 Luis Reis <luis.m.reis@gmail.com>
 Luke Zarko <lukezarko@gmail.com>
@@ -127,12 +132,14 @@ Sandro Santilli <strk@keybit.net>
 Sanjoy Das <sanjoy@playingwithpointers.com>
 Seo Sanghyeon <sanxiyn@gmail.com>
 Stefan Penner <stefan.penner@gmail.com>
+Sylvestre Ledru <sledru@mozilla.com>
 Tobias Burnus <burnus@net-b.de>
 Victor Costan <costan@gmail.com>
 Vlad Burlik <vladbph@gmail.com>
 Vladimir Krivosheev <develar@gmail.com>
 Vladimir Shutoff <vovan@shutoff.ru>
 Wiktor Garbacz <wiktor.garbacz@gmail.com>
+Yong Wang <ccyongwang@tencent.com>
 Yu Yin <xwafish@gmail.com>
 Zac Hansen <xaxxon@gmail.com>
 Zhongping Wang <kewpie.w.zp@gmail.com>