I don't think the attributes in WindowWebAudio.idl are needed anymore. The use counters for the constructors were updated to use Measure.
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/9f058d69c1820c58ca8df07865b7021e5ba3030f commit 9f058d69c1820c58ca8df07865b7021e5ba3030f Author: rtoy <rtoy@chromium.org> Date: Mon Feb 27 18:12:00 2017 Remove unnecessary window WebAudio attributes These attributes were added to measure the usage of the new WebAudio constructors. This has been replaced with a different scheme using the IDL files to specify measurement. Thus, these are obsolete and should be removed. The corresponding UseCounter entries are also removed. BUG= 693735 TEST=none Review-Url: https://codereview.chromium.org/2700233003 Cr-Commit-Position: refs/heads/master@{#453259} [modify] https://crrev.com/9f058d69c1820c58ca8df07865b7021e5ba3030f/third_party/WebKit/Source/core/frame/UseCounter.h [modify] https://crrev.com/9f058d69c1820c58ca8df07865b7021e5ba3030f/third_party/WebKit/Source/modules/modules_idl_files.gni [delete] https://crrev.com/2b7b343f00720cb53ac5b10918125037ee03deb0/third_party/WebKit/Source/modules/webaudio/DOMWindowWebAudio.h [delete] https://crrev.com/2b7b343f00720cb53ac5b10918125037ee03deb0/third_party/WebKit/Source/modules/webaudio/WindowWebAudio.idl
Comment 1 by bugdroid1@chromium.org
, Feb 27 2017