Revert of Support finer grained font weights on Mac.

Revert of Support finer grained font weights on Mac. (patchset #6 id:240001 of https://codereview.chromium.org/2869803005/ )

Reason for revert:
Need to test 10.11 again.

failures in the build cycle at https://luci-milo.appspot.com/buildbot/chromium.mac/Mac10.11%20Tests/12666

Original issue's description:
> Support finer grained font weights on Mac.
> 
> We want to explore a MEDIUM weight for button text under Harmony. This
> is consistent with MD and helps compensate for buttons not using solid
> black for the font color.
> 
> The San Francisco font in 10.11 and 10.12 has good support for finer
> grained weights and is the font Chrome UI is mostly concerned with, so
> focus testing on that but survey expectations for all supported OS
> versions.
> 
> BUG=691891
> 
> Review-Url: https://codereview.chromium.org/2869803005
> Cr-Commit-Position: refs/heads/master@{#473457}
> Committed: https://chromium.googlesource.com/chromium/src/+/bc62dfeaf37c83a79f393cb536fb22b39ea87097

TBR=asvitkine@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=691891
Review-Url: https://codereview.chromium.org/2898613002
Cr-Commit-Position: refs/heads/master@{#473460}
Committed: https://chromium.googlesource.com/chromium/src/+/cb23bc6b0dae9c82bb9845b4ea367d72e8c2edaf

[tapted, 2017-05-21 04:38:09]

The CQ bit was checked by tapted@chromium.org

[tapted, 2017-05-21 04:38:09]

Created Revert of Support finer grained font weights on Mac.

[commit-bot: I haz the power, 2017-05-21 04:38:14]

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, 2017-05-21 04:38:37]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1495341489495030, "parent_rev":
"33b723f0e62efbc4986c3f8dba52699c00a6e8a4", "commit_rev":
"cb23bc6b0dae9c82bb9845b4ea367d72e8c2edaf"}

[commit-bot: I haz the power, 2017-05-21 04:38:50]

Description was changed from

==========
Revert of Support finer grained font weights on Mac. (patchset #6 id:240001 of
https://codereview.chromium.org/2869803005/ )

Reason for revert:
Need to test 10.11 again.

failures in the build cycle at
https://luci-milo.appspot.com/buildbot/chromium.mac/Mac10.11%20Tests/12666

Original issue's description:
> Support finer grained font weights on Mac.
> 
> We want to explore a MEDIUM weight for button text under Harmony. This
> is consistent with MD and helps compensate for buttons not using solid
> black for the font color.
> 
> The San Francisco font in 10.11 and 10.12 has good support for finer
> grained weights and is the font Chrome UI is mostly concerned with, so
> focus testing on that but survey expectations for all supported OS
> versions.
> 
> BUG=691891
> 
> Review-Url: https://codereview.chromium.org/2869803005
> Cr-Commit-Position: refs/heads/master@{#473457}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bc62dfeaf37c83a79f393cb536fb...

TBR=asvitkine@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=691891
==========

to

==========
Revert of Support finer grained font weights on Mac. (patchset #6 id:240001 of
https://codereview.chromium.org/2869803005/ )

Reason for revert:
Need to test 10.11 again.

failures in the build cycle at
https://luci-milo.appspot.com/buildbot/chromium.mac/Mac10.11%20Tests/12666

Original issue's description:
> Support finer grained font weights on Mac.
> 
> We want to explore a MEDIUM weight for button text under Harmony. This
> is consistent with MD and helps compensate for buttons not using solid
> black for the font color.
> 
> The San Francisco font in 10.11 and 10.12 has good support for finer
> grained weights and is the font Chrome UI is mostly concerned with, so
> focus testing on that but survey expectations for all supported OS
> versions.
> 
> BUG=691891
> 
> Review-Url: https://codereview.chromium.org/2869803005
> Cr-Commit-Position: refs/heads/master@{#473457}
> Committed:
https://chromium.googlesource.com/chromium/src/+/bc62dfeaf37c83a79f393cb536fb...

TBR=asvitkine@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=691891

Review-Url: https://codereview.chromium.org/2898613002
Cr-Commit-Position: refs/heads/master@{#473460}
Committed:
https://chromium.googlesource.com/chromium/src/+/cb23bc6b0dae9c82bb9845b4ea36...
==========

[commit-bot: I haz the power, 2017-05-21 04:38:51]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/cb23bc6b0dae9c82bb9845b4ea36...