The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/fd42497e9d8fe45ff487d58ac184130bd9ee802d

commit fd42497e9d8fe45ff487d58ac184130bd9ee802d
Author: rtoy <rtoy@chromium.org>
Date: Sat Apr 22 00:03:19 2017

Move late-start-testing.js to only user

The code in resources/late-start-testing.js is used in only one
place.  Move that code into the one place.

The tests were updated to be more thorough in verifying that the
initial part is 0, and the first non-zero follows right after.

BUG= 708778 
TEST=oscillator-late-start.html

Review-Url: https://codereview.chromium.org/2810413004
Cr-Commit-Position: refs/heads/master@{#466502}

[modify] https://crrev.com/fd42497e9d8fe45ff487d58ac184130bd9ee802d/third_party/WebKit/LayoutTests/webaudio/Oscillator/oscillator-late-start.html
[delete] https://crrev.com/99bba8891981903c3089d5780d603b164086650d/third_party/WebKit/LayoutTests/webaudio/resources/late-start-testing.js