I found more failing tests from the pilot run:

webaudio/Analyser/realtimeanalyser-downmix.html
webaudio/Analyser/realtimeanalyser-freq-data-smoothing.html
webaudio/Analyser/realtimeanalyser-freq-data.html
webaudio/AudioBuffer/audiobuffer-getChannelData.html
webaudio/AudioBufferSource/audiobuffersource-ended.html
webaudio/AudioBufferSource/audiobuffersource-playbackrate-zero.html
webaudio/AudioBufferSource/audiosource-time-limits.html
webaudio/AudioParam/audioparam-initial-event.html
webaudio/AudioParam/audioparam-method-chaining.html
webaudio/AudioParam/audioparam-nominal-range.html
webaudio/AudioParam/audioparam-sampling.html
webaudio/AudioParam/audioparam-setTargetAtTime-continuous.html
webaudio/AudioParam/audioparam-setTargetAtTime-sampling.html
webaudio/AudioParam/audioparam-setValueCurve-duration.html
webaudio/AudioParam/audioparam-setValueCurve-exceptions.html
webaudio/BiquadFilter/biquad-automation.html
webaudio/BiquadFilter/biquad-getFrequencyResponse.html
webaudio/BiquadFilter/biquadfilternode-basic.html
webaudio/ConstantSource/constant-source-output.html
webaudio/Oscillator/oscillator-ended.html
webaudio/dom-exceptions.html
webaudio/internals/scriptprocessornode-premature-death.html
webaudio/unit-tests/audit-failures.html
webaudio/unit-tests/audit.html
webaudio/unit-tests/jstest-test.html
webaudio/unit-tests/testharness-test.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/926e3b8b4f6523331bb200c6665bb953acc91134

commit 926e3b8b4f6523331bb200c6665bb953acc91134
Author: hongchan <hongchan@chromium.org>
Date: Fri May 19 01:31:02 2017

Fix scriptprocessornode-rewrap.html

The structure of this test was outdated and broken. This CL sanitize the
test so we can apply the batch clean-up tool in the future.

BUG= 720537 
TEST=LayoutTests/webaudio/ScriptProcessor/scriptprocessornode-rewrap.html

Review-Url: https://codereview.chromium.org/2877523002
Cr-Commit-Position: refs/heads/master@{#473016}

[modify] https://crrev.com/926e3b8b4f6523331bb200c6665bb953acc91134/third_party/WebKit/LayoutTests/webaudio/ScriptProcessor/scriptprocessornode-rewrap.html