Port v8_optimized_debug to gn.

Port v8_optimized_debug to gn.

Makes browser_tests --gtest_filter=CrSettingsBrowserTest.CrSettingsTest
complete in a little over 8 seconds instead of timing out after 45s
on my box.  Without this patch, the test is much slower in gn builds
than in gyp builds.

v8/ part, goes with https://codereview.chromium.org/1880693003

BUG=chromium:586511
LOG=n

Committed: https://crrev.com/61c6cbb9e1d1ce2c77eb6d590bd7ecfb94426611
Cr-Commit-Position: refs/heads/master@{#35415}

[Nico, 2016-04-11 22:20:21]

thakis@chromium.org changed reviewers:
+ jochen@chromium.org

[Nico, 2016-04-11 22:22:09]

https://codereview.chromium.org/1882453002/diff/1/BUILD.gn
File BUILD.gn (right):

https://codereview.chromium.org/1882453002/diff/1/BUILD.gn#newcode249
BUILD.gn:249: "TRACE_MAPS",
From what I can tell, the gyp build never defines OPTIMIZED_DEBUG but always
defines TRACE_MAPS in debug builds, so I figured I'd fix this while I'm in here.

[Dirk Pranke, 2016-04-11 22:24:29]

dpranke@chromium.org changed reviewers:
+ dpranke@chromium.org

[Dirk Pranke, 2016-04-11 22:24:30]

lgtm

[jochen (gone - plz use gerrit), 2016-04-12 13:33:49]

lgtm

[Nico, 2016-04-12 13:34:22]

The CQ bit was checked by thakis@chromium.org

[commit-bot: I haz the power, 2016-04-12 13:34:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1882453002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1882453002/1

[commit-bot: I haz the power, 2016-04-12 13:38:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-04-12 13:38:23]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/13493)

[jochen (gone - plz use gerrit), 2016-04-12 13:39:18]

Description was changed from

==========
Port v8_optimized_debug to gn.

Makes browser_tests --gtest_filter=CrSettingsBrowserTest.CrSettingsTest
complete in a little over 8 seconds instead of timing out after 45s
on my box.  Without this patch, the test is much slower in gn builds
than in gyp builds.

v8/ part, goes with https://codereview.chromium.org/1880693003

BUG=586511
==========

to

==========
Port v8_optimized_debug to gn.

Makes browser_tests --gtest_filter=CrSettingsBrowserTest.CrSettingsTest
complete in a little over 8 seconds instead of timing out after 45s
on my box.  Without this patch, the test is much slower in gn builds
than in gyp builds.

v8/ part, goes with https://codereview.chromium.org/1880693003

BUG=chromium:586511
LOG=n
==========

[jochen (gone - plz use gerrit), 2016-04-12 13:39:22]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2016-04-12 13:39:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1882453002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1882453002/1

[commit-bot: I haz the power, 2016-04-12 13:47:52]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-12 13:49:30]

Description was changed from

==========
Port v8_optimized_debug to gn.

Makes browser_tests --gtest_filter=CrSettingsBrowserTest.CrSettingsTest
complete in a little over 8 seconds instead of timing out after 45s
on my box.  Without this patch, the test is much slower in gn builds
than in gyp builds.

v8/ part, goes with https://codereview.chromium.org/1880693003

BUG=chromium:586511
LOG=n
==========

to

==========
Port v8_optimized_debug to gn.

Makes browser_tests --gtest_filter=CrSettingsBrowserTest.CrSettingsTest
complete in a little over 8 seconds instead of timing out after 45s
on my box.  Without this patch, the test is much slower in gn builds
than in gyp builds.

v8/ part, goes with https://codereview.chromium.org/1880693003

BUG=chromium:586511
LOG=n

Committed: https://crrev.com/61c6cbb9e1d1ce2c77eb6d590bd7ecfb94426611
Cr-Commit-Position: refs/heads/master@{#35415}
==========

[commit-bot: I haz the power, 2016-04-12 13:49:32]

Patchset 1 (id:??) landed as
https://crrev.com/61c6cbb9e1d1ce2c77eb6d590bd7ecfb94426611
Cr-Commit-Position: refs/heads/master@{#35415}