Reland of Fix downloading LLVM Gold plugin in the case, when Clang is up to date.

Reland of Fix downloading LLVM Gold plugin in the case, when Clang is up to date. (patchset #1 id:1 of https://codereview.chromium.org/1494883004/ )

Reason for revert:
Reverting didn't help.

Original issue's description:
> Revert of Fix downloading LLVM Gold plugin in the case, when Clang is up to date. (patchset #1 id:1 of https://codereview.chromium.org/1491203003/ )
>
> Reason for revert:
> This breaks Codesearch bots.
>
> Original issue's description:
> > Fix downloading LLVM Gold plugin in the case, when Clang is up to date.
> >
> > The script should download LLVM Gold plugin, if it's missing, even if the
> > main Clang toolchain is up to date. This change is to match update.py
> > functionality with the gone update.sh.
> >
> > BUG=464797, 494442
> >
> > Committed: https://crrev.com/7ff79f9569429444dabdb6d5024918bc548916b3
> > Cr-Commit-Position: refs/heads/master@{#362803}
>
> TBR=thakis@chromium.org,krasin@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=464797, 494442
>
> Committed: https://crrev.com/9e37ffbe43c0b100bcc02f9faf648f11d86316c1
> Cr-Commit-Position: refs/heads/master@{#362938}

TBR=thakis@chromium.org,krasin@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=464797, 494442
Committed: https://crrev.com/2f8494c55755a5b7f7c61c5204b05a5634189b3c
Cr-Commit-Position: refs/heads/master@{#362939}

[Adrian Kuegel, 2015-12-03 10:12:43]

Created Reland of Fix downloading LLVM Gold plugin in the case, when Clang is up
to date.

[commit-bot: I haz the power, 2015-12-03 10:12:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1493283002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1493283002/1

[commit-bot: I haz the power, 2015-12-03 10:14:00]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-03 10:15:05]

Description was changed from

==========
Reland of Fix downloading LLVM Gold plugin in the case, when Clang is up to
date. (patchset #1 id:1 of https://codereview.chromium.org/1494883004/ )

Reason for revert:
Reverting didn't help.

Original issue's description:
> Revert of Fix downloading LLVM Gold plugin in the case, when Clang is up to
date. (patchset #1 id:1 of https://codereview.chromium.org/1491203003/ )
> 
> Reason for revert:
> This breaks Codesearch bots.
> 
> Original issue's description:
> > Fix downloading LLVM Gold plugin in the case, when Clang is up to date.
> >
> > The script should download LLVM Gold plugin, if it's missing, even if the
> > main Clang toolchain is up to date. This change is to match update.py
> > functionality with the gone update.sh.
> >
> > BUG=464797,494442
> >
> > Committed: https://crrev.com/7ff79f9569429444dabdb6d5024918bc548916b3
> > Cr-Commit-Position: refs/heads/master@{#362803}
> 
> TBR=thakis@chromium.org,krasin@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=464797,494442
> 
> Committed: https://crrev.com/9e37ffbe43c0b100bcc02f9faf648f11d86316c1
> Cr-Commit-Position: refs/heads/master@{#362938}

TBR=thakis@chromium.org,krasin@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=464797,494442
==========

to

==========
Reland of Fix downloading LLVM Gold plugin in the case, when Clang is up to
date. (patchset #1 id:1 of https://codereview.chromium.org/1494883004/ )

Reason for revert:
Reverting didn't help.

Original issue's description:
> Revert of Fix downloading LLVM Gold plugin in the case, when Clang is up to
date. (patchset #1 id:1 of https://codereview.chromium.org/1491203003/ )
>
> Reason for revert:
> This breaks Codesearch bots.
>
> Original issue's description:
> > Fix downloading LLVM Gold plugin in the case, when Clang is up to date.
> >
> > The script should download LLVM Gold plugin, if it's missing, even if the
> > main Clang toolchain is up to date. This change is to match update.py
> > functionality with the gone update.sh.
> >
> > BUG=464797,494442
> >
> > Committed: https://crrev.com/7ff79f9569429444dabdb6d5024918bc548916b3
> > Cr-Commit-Position: refs/heads/master@{#362803}
>
> TBR=thakis@chromium.org,krasin@google.com
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=464797,494442
>
> Committed: https://crrev.com/9e37ffbe43c0b100bcc02f9faf648f11d86316c1
> Cr-Commit-Position: refs/heads/master@{#362938}

TBR=thakis@chromium.org,krasin@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=464797,494442

Committed: https://crrev.com/2f8494c55755a5b7f7c61c5204b05a5634189b3c
Cr-Commit-Position: refs/heads/master@{#362939}
==========

[commit-bot: I haz the power, 2015-12-03 10:15:06]

Patchset 1 (id:??) landed as
https://crrev.com/2f8494c55755a5b7f7c61c5204b05a5634189b3c
Cr-Commit-Position: refs/heads/master@{#362939}