[gn] Fix isolate_driver for gn

[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions were executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921
Committed: https://crrev.com/87affbc531b1b28d27d38075ec0fd9d0a2037e4a
Cr-Commit-Position: refs/heads/master@{#36746}

[Michael Achenbach, 2016-06-06 12:20:25]

The CQ bit was checked by machenbach@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-06-06 12:20:34]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2039873002/1

[Michael Achenbach, 2016-06-06 12:20:35]

Description was changed from

==========
[gn] Fix isolate_driver for gn

BUG=
==========

to

==========
[gn] Fix isolate_driver for gn

BUG=chromium:474921
==========

[Michael Achenbach, 2016-06-06 12:23:57]

Description was changed from

==========
[gn] Fix isolate_driver for gn

BUG=chromium:474921
==========

to

==========
[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions where executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921
==========

[Michael Achenbach, 2016-06-06 12:24:59]

machenbach@chromium.org changed reviewers:
+ jochen@chromium.org, tandrii@chromium.org, vogelheim@chromium.org

[Michael Achenbach, 2016-06-06 12:25:00]

PTAL

[Michael Achenbach, 2016-06-06 12:25:17]

Description was changed from

==========
[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions where executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921
==========

to

==========
[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions were executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921
==========

[commit-bot: I haz the power, 2016-06-06 12:49:30]

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

[commit-bot: I haz the power, 2016-06-06 12:49:31]

Dry run: This issue passed the CQ dry run.

[tandrii(chromium), 2016-06-06 12:54:33]

lgtm

https://codereview.chromium.org/2039873002/diff/1/tools/isolate_driver.py
File tools/isolate_driver.py (right):

https://codereview.chromium.org/2039873002/diff/1/tools/isolate_driver.py#new...
tools/isolate_driver.py:67: os.chdir(new_base)

assert(os.path.basename(args[isolate]) == args[isolate])

[Michael Achenbach, 2016-06-06 12:57:52]

Done

[Michael Achenbach, 2016-06-06 12:57:56]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2016-06-06 12:57:57]

The patchset sent to the CQ was uploaded after l-g-t-m from tandrii@chromium.org
Link to the patchset: https://codereview.chromium.org/2039873002/#ps20001
(title: "Review")

[commit-bot: I haz the power, 2016-06-06 12:58:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2039873002/20001

[commit-bot: I haz the power, 2016-06-06 13:24:50]

Description was changed from

==========
[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions were executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921
==========

to

==========
[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions were executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921
==========

[commit-bot: I haz the power, 2016-06-06 13:24:51]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-06-06 13:25:12]

Description was changed from

==========
[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions were executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921
==========

to

==========
[gn] Fix isolate_driver for gn

This makes the isolate-driver script rebase all paths to be
relative to the isolate-file location. This is an assumption
of the go binaries and is needed for batcharchive to work.

In gyp, actions were executed relative to the gyp file that
specified them, while in gn it's relative to the product dir.

BUG=chromium:474921

Committed: https://crrev.com/87affbc531b1b28d27d38075ec0fd9d0a2037e4a
Cr-Commit-Position: refs/heads/master@{#36746}
==========

[commit-bot: I haz the power, 2016-06-06 13:25:13]

Patchset 2 (id:??) landed as
https://crrev.com/87affbc531b1b28d27d38075ec0fd9d0a2037e4a
Cr-Commit-Position: refs/heads/master@{#36746}