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Jungshik Shin 28ef8dc700 Revert "Enable icu-timezone-data by default" 
This reverts commit d9a25842d3.

Reason for revert: 

I'm reverting this CL for a few reasons. #2 is the most significant and I should have thought of that before making a switch. Sorry for that.   

1) perf-regression: http://crbug.com/769706
2) http://crbug.com/612010 : ICU timezone update is not propagated to zygote process so that new tabs will hold on to an old timezone even after a timezone change on Linux and Chrome OS. 
3) http://crbug.com/754053 : OS timezone detection issues on macOS 10.13, Ubutu 16, RHEL 7, SuSe Linux 12 or newer. ; it's being fixed. So, it actually ok.  
4) http://crbug.com/771868 : timezone wrong in gmail: If it's due to #3, we're fine because it's fixed. If not, we need to look more.

Original change's description:
> Enable icu-timezone-data by default
> 
> This will introduce a new behavior on POSIX(-like) platforms. Timezone
> names inside parentheses after GMT offset will not be 3-4 letter
> abbreviation any longer. They'll be human-readable names in the current
> default locale. This matches the current Windows behavior.
> 
> new Date(2017, 5, 22).toString()
> new Date(2017, 11, 22).toString()
> 
> Current:
> 
> Thu Jun 22 2017 00:00:00 GMT-0700 (PDT)
> Fri Dec 22 2017 00:00:00 GMT-0800 (PST)
> 
> New in en-US locale:
> 
> Thu Jun 22 2017 00:00:00 GMT-0700 (Pacific Daylight Time)
> Fri Dec 22 2017 00:00:00 GMT-0800 (Pacific Standard Time)
> 
> New in German locale:
> 
> Thu Jun 22 2017 00:00:00 GMT-0700 (Nordamerikanische Westküsten-Sommerzeit)
> Fri Dec 22 2017 00:00:00 GMT-0800 (Nordamerikanische Westküsten-Normalzeit)
> 
> BUG=v8:6031, v8:2137, v8:6076
> TEST=mjsunit/icu-date-lord-howe.js, mjsunit/icu-date-to-string.js
> 
> Change-Id: I4e7fd8b3ddae5c7779e220c4c101e45904fcdc01
> Reviewed-on: https://chromium-review.googlesource.com/625164
> Commit-Queue: Jungshik Shin <jshin@chromium.org>
> Reviewed-by: Daniel Ehrenberg <littledan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47953}

TBR=adamk@chromium.org,littledan@chromium.org,jshin@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:6031, v8:2137, v8:6076, chromium:769706, chromium:612010, chromium:771868
Change-Id: I60d75467ee21975d3a235344b01c0d2d44a7da96
Reviewed-on: https://chromium-review.googlesource.com/713404
Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48478}
2017-10-11 23:21:37 +00:00
benchmarks Fix common misspellings 2017-08-02 09:35:28 +00:00
build_overrides Remove build_override for macOS min SDK and deployment target. 2017-07-14 18:24:44 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni Reland "[build] Switch windows default compilation to MSVS 2017" 2017-09-29 09:36:49 +00:00
gypfiles [test] Remove valgrind support 2017-10-11 07:41:33 +00:00
include Reland "[modules] Implement import.meta proposal" 2017-10-11 15:37:10 +00:00
infra [test] Remove valgrind support 2017-10-11 07:41:33 +00:00
samples [presubmit] Enable and fix "build/namespaces" linter check. 2017-09-04 11:24:26 +00:00
src Revert "Enable icu-timezone-data by default" 2017-10-11 23:21:37 +00:00
test Reland "Reland "[wasm] trap handlers: fall back on old signal handler"" 2017-10-11 20:49:45 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party Roll third_party/inspector_protocol to 8cb7a4f50ff7d5b1b7f2e5df0542dc577c88bdc3 2017-10-11 22:52:17 +00:00
tools [test] Remove deprecated test-download feature 2017-10-11 15:18:19 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.editorconfig Add .editorconfig 2017-07-28 13:39:24 +00:00
.git-blame-ignore-revs [build] Add DEPS formatting to hyper-blame 2017-10-09 14:08:45 +00:00
.gitignore [wasm] Add uma stat for wasm lazy throughput 2017-10-11 21:00:22 +00:00
.gn For building v8 using gn on aix_ppc64, linux_s390x and linux_ppc64(both LE and BE). 2017-05-12 01:35:09 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS [asm.js] Fix infinite loop in parser on parse error. 2017-10-04 16:13:39 +00:00
BUILD.gn Remove FFI prototype. 2017-10-10 11:12:59 +00:00
ChangeLog [Release] Update ChangeLog file 2016-02-17 21:29:09 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Make Gerrit the default code review for V8 2017-06-30 17:37:37 +00:00
DEPS [build] Check out instrumented libraries via gclient flag 2017-10-11 14:46:45 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
Makefile [heap] Port concurrent marking flag to GYP. 2017-08-23 15:26:43 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Add eholk and gdeepti to toplevel owners 2017-08-12 07:07:29 +00:00
PRESUBMIT.py [iwyu] Turn inclusion presubmit warning into and error. 2017-09-14 10:17:58 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni MIPS[64]: Add support for big endian build using GN 2017-06-02 15:02:18 +00:00
WATCHLISTS [V8Tracing] Add lpy@ and fmeawad@ into watchlist for tracing/. 2017-05-22 19:40:17 +00:00

README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://github.com/v8/v8/wiki

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned on the V8 wiki.