Revert of Update MB to use `gn analyze`.

Revert of Update MB to use `gn analyze`. (patchset #9 id:160001 of https://codereview.chromium.org/2298403002/ )

Reason for revert:
Need to add "aura_builder", probably others ...

Original issue's description:
> Update MB to use `gn analyze`.
>
> Now that GN supports a form of `analyze` directly, this patch
> updates //tools/mb to use it rather than working awkwardly through
> `gn refs`. The MB implementation now is mostly responsible for
> mapping ninja targets to labels, calling GN, and then mapping returned
> labels back to ninja targets. Eventually we should update the
> recipes to just pass labels around instead.
>
> One significant change is that now we need entries in gn_isolate_map.pyl
> for every target listed in 'additional_compile_targets' and
> 'isolated_scripts' as well as in 'gtest_tests', because we have to remap
> everything to the GN labels, not just tests for swarming.
>
> We should switch everything to using GN labels directly, but that'll require
> follow-on CLs.
>
> R=brettw@chromium.org
> BUG=555273
>
> Committed: https://crrev.com/9aba8b21177df3ed3e897d5c500d845fbf5523e6
> Cr-Commit-Position: refs/heads/master@{#419315}

TBR=phajdan.jr@chromium.org,brettw@chromium.org,kbr@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=555273
Committed: https://crrev.com/10118bffe51b2b751cc568dddf772a74cd9b8dbd
Cr-Commit-Position: refs/heads/master@{#419321}

[Dirk Pranke, 2016-09-16 23:15:25]

The CQ bit was checked by dpranke@chromium.org

[Dirk Pranke, 2016-09-16 23:15:26]

Created Revert of Update MB to use `gn analyze`.

[commit-bot: I haz the power, 2016-09-16 23:15:40]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-16 23:16:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-16 23:17:59]

Description was changed from

==========
Revert of Update MB to use `gn analyze`. (patchset #9 id:160001 of
https://codereview.chromium.org/2298403002/ )

Reason for revert:
Need to add "aura_builder", probably others ...

Original issue's description:
> Update MB to use `gn analyze`.
> 
> Now that GN supports a form of `analyze` directly, this patch
> updates //tools/mb to use it rather than working awkwardly through
> `gn refs`. The MB implementation now is mostly responsible for
> mapping ninja targets to labels, calling GN, and then mapping returned
> labels back to ninja targets. Eventually we should update the
> recipes to just pass labels around instead.
> 
> One significant change is that now we need entries in gn_isolate_map.pyl
> for every target listed in 'additional_compile_targets' and
> 'isolated_scripts' as well as in 'gtest_tests', because we have to remap
> everything to the GN labels, not just tests for swarming.
> 
> We should switch everything to using GN labels directly, but that'll require
> follow-on CLs.
> 
> R=brettw@chromium.org
> BUG=555273
> 
> Committed: https://crrev.com/9aba8b21177df3ed3e897d5c500d845fbf5523e6
> Cr-Commit-Position: refs/heads/master@{#419315}

TBR=phajdan.jr@chromium.org,brettw@chromium.org,kbr@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=555273
==========

to

==========
Revert of Update MB to use `gn analyze`. (patchset #9 id:160001 of
https://codereview.chromium.org/2298403002/ )

Reason for revert:
Need to add "aura_builder", probably others ...

Original issue's description:
> Update MB to use `gn analyze`.
>
> Now that GN supports a form of `analyze` directly, this patch
> updates //tools/mb to use it rather than working awkwardly through
> `gn refs`. The MB implementation now is mostly responsible for
> mapping ninja targets to labels, calling GN, and then mapping returned
> labels back to ninja targets. Eventually we should update the
> recipes to just pass labels around instead.
>
> One significant change is that now we need entries in gn_isolate_map.pyl
> for every target listed in 'additional_compile_targets' and
> 'isolated_scripts' as well as in 'gtest_tests', because we have to remap
> everything to the GN labels, not just tests for swarming.
>
> We should switch everything to using GN labels directly, but that'll require
> follow-on CLs.
>
> R=brettw@chromium.org
> BUG=555273
>
> Committed: https://crrev.com/9aba8b21177df3ed3e897d5c500d845fbf5523e6
> Cr-Commit-Position: refs/heads/master@{#419315}

TBR=phajdan.jr@chromium.org,brettw@chromium.org,kbr@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=555273

Committed: https://crrev.com/10118bffe51b2b751cc568dddf772a74cd9b8dbd
Cr-Commit-Position: refs/heads/master@{#419321}
==========

[commit-bot: I haz the power, 2016-09-16 23:18:00]

Patchset 1 (id:??) landed as
https://crrev.com/10118bffe51b2b751cc568dddf772a74cd9b8dbd
Cr-Commit-Position: refs/heads/master@{#419321}