Add test suppression for webaudio/sine-oscillator.html.
Add test suppression for webaudio/sine-oscillator.html.

TBR=yhirano
BUG=431688

Review URL: https://codereview.chromium.org/713943002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@185055 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs