Revert of Propagate is_official_build to version script.

Revert of Propagate is_official_build to version script. (patchset #1 id:1 of https://codereview.chromium.org/1838173005/ )

Reason for revert:
Made all the Android perf bots red: https://bugs.chromium.org/p/chromium/issues/detail?id=599830

Original issue's description:
> Propagate is_official_build to version script.
>
> OFFICIAL_BUILD is a special variable in the version script which
> takes its value from the environment variable. This means that local
> builds with is_official_build will not actually result in
> ChromeVersionConstants.isOfficialBuild() returning true.
>
> This CL propagates the is_official_build truthiness to the script so
> official builds no longer depend solely on the environment variable.
>
> BUG=599268
>
> Committed: https://crrev.com/eab85df0275b825e428954c4030e358ce968ecd9
> Cr-Commit-Position: refs/heads/master@{#384340}

TBR=agrieve@chromium.org,thestig@chromium.org,wnwen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=599268
Committed: https://crrev.com/756e9b934bf1d706dd59ab39bed2af842b67063b
Cr-Commit-Position: refs/heads/master@{#384610}

[Sami, 2016-04-01 16:55:21]

Created Revert of Propagate is_official_build to version script.

[commit-bot: I haz the power, 2016-04-01 16:55:50]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1851843002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1851843002/1

[commit-bot: I haz the power, 2016-04-01 16:56:20]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-01 16:57:42]

Description was changed from

==========
Revert of Propagate is_official_build to version script. (patchset #1 id:1 of
https://codereview.chromium.org/1838173005/ )

Reason for revert:
Made all the Android perf bots red:
https://bugs.chromium.org/p/chromium/issues/detail?id=599830

Original issue's description:
> Propagate is_official_build to version script.
> 
> OFFICIAL_BUILD is a special variable in the version script which
> takes its value from the environment variable. This means that local
> builds with is_official_build will not actually result in
> ChromeVersionConstants.isOfficialBuild() returning true.
> 
> This CL propagates the is_official_build truthiness to the script so
> official builds no longer depend solely on the environment variable.
> 
> BUG=599268
> 
> Committed: https://crrev.com/eab85df0275b825e428954c4030e358ce968ecd9
> Cr-Commit-Position: refs/heads/master@{#384340}

TBR=agrieve@chromium.org,thestig@chromium.org,wnwen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=599268
==========

to

==========
Revert of Propagate is_official_build to version script. (patchset #1 id:1 of
https://codereview.chromium.org/1838173005/ )

Reason for revert:
Made all the Android perf bots red:
https://bugs.chromium.org/p/chromium/issues/detail?id=599830

Original issue's description:
> Propagate is_official_build to version script.
>
> OFFICIAL_BUILD is a special variable in the version script which
> takes its value from the environment variable. This means that local
> builds with is_official_build will not actually result in
> ChromeVersionConstants.isOfficialBuild() returning true.
>
> This CL propagates the is_official_build truthiness to the script so
> official builds no longer depend solely on the environment variable.
>
> BUG=599268
>
> Committed: https://crrev.com/eab85df0275b825e428954c4030e358ce968ecd9
> Cr-Commit-Position: refs/heads/master@{#384340}

TBR=agrieve@chromium.org,thestig@chromium.org,wnwen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=599268

Committed: https://crrev.com/756e9b934bf1d706dd59ab39bed2af842b67063b
Cr-Commit-Position: refs/heads/master@{#384610}
==========

[commit-bot: I haz the power, 2016-04-01 16:57:43]

Patchset 1 (id:??) landed as
https://crrev.com/756e9b934bf1d706dd59ab39bed2af842b67063b
Cr-Commit-Position: refs/heads/master@{#384610}

[Peter Wen, 2016-04-04 17:26:46]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1856843002/ by wnwen@chromium.org.

The reason for reverting is: The actual crash was in OmahaClient, which is fixed
in: http://crrev.com/1856823002.