Revert of Reduce runtime of osc-negative-freq test

Revert of Reduce runtime of osc-negative-freq test (patchset #3 id:40001 of https://codereview.chromium.org/2751213002/ )

Reason for revert:
After this patch, osc-negative-freq.html is consistently failing on WebKit Mac10.11 (retina):
https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Mac10.11%20%28retina%29/builds/13573

Original issue's description:
> Reduce runtime of osc-negative-freq test
> 
> Reduce the sample rate and duration of the osc-negative-freq test to
> make it run faster for MSAN tests.  Tightened up the thresholds for
> the new test.
> 
> On a Z620 machine running linux, the debug runtime was 1.414 sec. It
> is now 0.860, roughtly 60% as long as before.
> 
> BUG=701418
> TEST=osc-negative-freq.html
> 
> Review-Url: https://codereview.chromium.org/2751213002
> Cr-Commit-Position: refs/heads/master@{#457608}
> Committed: https://chromium.googlesource.com/chromium/src/+/db917052bfb936546b2602cdb657c310778c6451

TBR=hongchan@chromium.org,qyearsley@chromium.org,rtoy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=701418
Review-Url: https://codereview.chromium.org/2756113003
Cr-Commit-Position: refs/heads/master@{#457708}
Committed: https://chromium.googlesource.com/chromium/src/+/cbe096e8f2ab682af6291cbe13a00f21839c7bc8

[nhiroki, 2017-03-17 07:19:38]

The CQ bit was checked by nhiroki@chromium.org

[nhiroki, 2017-03-17 07:19:38]

Created Revert of Reduce runtime of osc-negative-freq test

[commit-bot: I haz the power, 2017-03-17 07:19:50]

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, 2017-03-17 07:20:25]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489735178034290, "parent_rev":
"89a1877418ea6acbc9521be4bb8071356dcb41e3", "commit_rev":
"cbe096e8f2ab682af6291cbe13a00f21839c7bc8"}

[commit-bot: I haz the power, 2017-03-17 07:21:04]

Description was changed from

==========
Revert of Reduce runtime of osc-negative-freq test (patchset #3 id:40001 of
https://codereview.chromium.org/2751213002/ )

Reason for revert:
After this patch, osc-negative-freq.html is consistently failing on WebKit
Mac10.11 (retina):
https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Mac1...

Original issue's description:
> Reduce runtime of osc-negative-freq test
> 
> Reduce the sample rate and duration of the osc-negative-freq test to
> make it run faster for MSAN tests.  Tightened up the thresholds for
> the new test.
> 
> On a Z620 machine running linux, the debug runtime was 1.414 sec. It
> is now 0.860, roughtly 60% as long as before.
> 
> BUG=701418
> TEST=osc-negative-freq.html
> 
> Review-Url: https://codereview.chromium.org/2751213002
> Cr-Commit-Position: refs/heads/master@{#457608}
> Committed:
https://chromium.googlesource.com/chromium/src/+/db917052bfb936546b2602cdb657...

TBR=hongchan@chromium.org,qyearsley@chromium.org,rtoy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=701418
==========

to

==========
Revert of Reduce runtime of osc-negative-freq test (patchset #3 id:40001 of
https://codereview.chromium.org/2751213002/ )

Reason for revert:
After this patch, osc-negative-freq.html is consistently failing on WebKit
Mac10.11 (retina):
https://uberchromegw.corp.google.com/i/chromium.webkit/builders/WebKit%20Mac1...

Original issue's description:
> Reduce runtime of osc-negative-freq test
> 
> Reduce the sample rate and duration of the osc-negative-freq test to
> make it run faster for MSAN tests.  Tightened up the thresholds for
> the new test.
> 
> On a Z620 machine running linux, the debug runtime was 1.414 sec. It
> is now 0.860, roughtly 60% as long as before.
> 
> BUG=701418
> TEST=osc-negative-freq.html
> 
> Review-Url: https://codereview.chromium.org/2751213002
> Cr-Commit-Position: refs/heads/master@{#457608}
> Committed:
https://chromium.googlesource.com/chromium/src/+/db917052bfb936546b2602cdb657...

TBR=hongchan@chromium.org,qyearsley@chromium.org,rtoy@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=701418

Review-Url: https://codereview.chromium.org/2756113003
Cr-Commit-Position: refs/heads/master@{#457708}
Committed:
https://chromium.googlesource.com/chromium/src/+/cbe096e8f2ab682af6291cbe13a0...
==========

[commit-bot: I haz the power, 2017-03-17 07:21:05]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/cbe096e8f2ab682af6291cbe13a0...