BUG=chromium:474921
NOTRY=true

Committed: https://crrev.com/67e549ec5b34ad02506abb2720c6a0851ae31f5e
Cr-Commit-Position: refs/heads/master@{#36510}

Review-Url: https://codereview.chromium.org/2011853002
Cr-Commit-Position: refs/heads/master@{#36582}

Reason for revert:
Speculative revert because of roll block:
https://codereview.chromium.org/2004203004/

Original issue's description:
> [gn] Add unittests
>
> BUG=chromium:474921
> NOTRY=true
>
> Committed: https://crrev.com/67e549ec5b34ad02506abb2720c6a0851ae31f5e
> Cr-Commit-Position: refs/heads/master@{#36510}

TBR=vogelheim@chromium.org,bmeurer@chromium.org,machenbach@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:474921

Review-Url: https://codereview.chromium.org/2004373005
Cr-Commit-Position: refs/heads/master@{#36521}

BUG=chromium:474921
NOTRY=true

Review-Url: https://codereview.chromium.org/2011853002
Cr-Commit-Position: refs/heads/master@{#36510}

There are bots on the chromium.lkgr waterfall that need to
be able to set v8_target_arch to "arm" while the rest of
the target build is "x86". This CL makes that argument
a declare_arg(), so that we can do that.

BUG=chromium:605732,chromium:474921
NOTRY=true

Review-Url: https://codereview.chromium.org/2007843002
Cr-Commit-Position: refs/heads/master@{#36464}

use_icu_data_file from //third_party/icu should be used.
//third_party/icu also defines ICU_UTIL_DATA_IMPL.

BUG=chromium:610673,chromium:474921

Review-Url: https://codereview.chromium.org/1996033002
Cr-Commit-Position: refs/heads/master@{#36371}

BUG=chromium:474921
LOG=n
NOTRY=true

Review-Url: https://codereview.chromium.org/1988023003
Cr-Commit-Position: refs/heads/master@{#36329}

BUG=chromium:474921
LOG=n
NOTRY=true

Review-Url: https://codereview.chromium.org/1983093002
Cr-Commit-Position: refs/heads/master@{#36293}

BUG=chromium:474921
LOG=n
NOTRY=true

Review-Url: https://codereview.chromium.org/1971133002
Cr-Commit-Position: refs/heads/master@{#36210}

BUG=chromium:474921
LOG=n

Review-Url: https://codereview.chromium.org/1936123002
Cr-Commit-Position: refs/heads/master@{#35939}