Revert of mac: Roll hermetic toolchain to Xcode 8.3.2.

Revert of mac: Roll hermetic toolchain to Xcode 8.3.2. (patchset #2 id:20001 of https://codereview.chromium.org/2950933003/ )

Reason for revert:
Broke mac builders on chromium.perf: https://build.chromium.org/p/chromium.perf/builders/Mac%20Builder/builds/102244

Original issue's description:
> mac: Roll hermetic toolchain to Xcode 8.3.2.
> 
> Xcode 8.3.2 requires macOS 10.12+. This version of Xcode 8.3.2 has both the
> 10.10 and 10.12 SDKs, and builds will continue to use the 10.10 SDK.
> 
> To support machines running macOS versions < 10.12, but don't require building
> targets, this CL also:
>   * Does not download the hermetic toolchain if the macOS version does not
>     support the toolchain version.
>   * Does not allow building targets with the default hermetic toolchain if the
>     macOS version does not support the toolchain version.
> 
> BUG=624049
> 
> Review-Url: https://codereview.chromium.org/2950933003
> Cr-Commit-Position: refs/heads/master@{#481225}
> Committed: https://chromium.googlesource.com/chromium/src/+/2f19b143e444c920e643feda583e9ceb72d29c8e

TBR=dpranke@chromium.org,erikchen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=624049
Review-Url: https://codereview.chromium.org/2949043002
Cr-Commit-Position: refs/heads/master@{#481241}
Committed: https://chromium.googlesource.com/chromium/src/+/81095e19266ad3da6479a5889793842fe49a437b

[martiniss, 2017-06-21 18:10:48]

The CQ bit was checked by martiniss@chromium.org

[martiniss, 2017-06-21 18:10:48]

Created Revert of mac: Roll hermetic toolchain to Xcode 8.3.2.

[commit-bot: I haz the power, 2017-06-21 18:11:04]

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, 2017-06-21 18:12:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498068648336420, "parent_rev":
"4e67ff77a768dc68734539361280fed92136ada1", "commit_rev":
"81095e19266ad3da6479a5889793842fe49a437b"}

[commit-bot: I haz the power, 2017-06-21 18:12:24]

Description was changed from

==========
Revert of mac: Roll hermetic toolchain to Xcode 8.3.2. (patchset #2 id:20001 of
https://codereview.chromium.org/2950933003/ )

Reason for revert:
Broke mac builders on chromium.perf:
https://build.chromium.org/p/chromium.perf/builders/Mac%20Builder/builds/102244

Original issue's description:
> mac: Roll hermetic toolchain to Xcode 8.3.2.
> 
> Xcode 8.3.2 requires macOS 10.12+. This version of Xcode 8.3.2 has both the
> 10.10 and 10.12 SDKs, and builds will continue to use the 10.10 SDK.
> 
> To support machines running macOS versions < 10.12, but don't require building
> targets, this CL also:
>   * Does not download the hermetic toolchain if the macOS version does not
>     support the toolchain version.
>   * Does not allow building targets with the default hermetic toolchain if the
>     macOS version does not support the toolchain version.
> 
> BUG=624049
> 
> Review-Url: https://codereview.chromium.org/2950933003
> Cr-Commit-Position: refs/heads/master@{#481225}
> Committed:
https://chromium.googlesource.com/chromium/src/+/2f19b143e444c920e643feda583e...

TBR=dpranke@chromium.org,erikchen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=624049
==========

to

==========
Revert of mac: Roll hermetic toolchain to Xcode 8.3.2. (patchset #2 id:20001 of
https://codereview.chromium.org/2950933003/ )

Reason for revert:
Broke mac builders on chromium.perf:
https://build.chromium.org/p/chromium.perf/builders/Mac%20Builder/builds/102244

Original issue's description:
> mac: Roll hermetic toolchain to Xcode 8.3.2.
> 
> Xcode 8.3.2 requires macOS 10.12+. This version of Xcode 8.3.2 has both the
> 10.10 and 10.12 SDKs, and builds will continue to use the 10.10 SDK.
> 
> To support machines running macOS versions < 10.12, but don't require building
> targets, this CL also:
>   * Does not download the hermetic toolchain if the macOS version does not
>     support the toolchain version.
>   * Does not allow building targets with the default hermetic toolchain if the
>     macOS version does not support the toolchain version.
> 
> BUG=624049
> 
> Review-Url: https://codereview.chromium.org/2950933003
> Cr-Commit-Position: refs/heads/master@{#481225}
> Committed:
https://chromium.googlesource.com/chromium/src/+/2f19b143e444c920e643feda583e...

TBR=dpranke@chromium.org,erikchen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=624049

Review-Url: https://codereview.chromium.org/2949043002
Cr-Commit-Position: refs/heads/master@{#481241}
Committed:
https://chromium.googlesource.com/chromium/src/+/81095e19266ad3da6479a5889793...
==========

[commit-bot: I haz the power, 2017-06-21 18:12:25]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/81095e19266ad3da6479a5889793...

[erikchen, 2017-06-21 18:12:29]

lgtm

[Dirk Pranke, 2017-06-21 19:08:35]

lgtm