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}

third_party/WebKit/Source/core/frame/UseCounter.h

@@ -1209,23 +1209,6 @@ class CORE_EXPORT UseCounter {
     VRGetDisplays = 1558,
     VRPresent = 1559,
     VRDeprecatedGetPose = 1560,
-    WebAudioAnalyserNode = 1561,
-    WebAudioAudioBuffer = 1562,
-    WebAudioAudioBufferSourceNode = 1563,
-    WebAudioBiquadFilterNode = 1564,
-    WebAudioChannelMergerNode = 1565,
-    WebAudioChannelSplitterNode = 1566,
-    WebAudioConvolverNode = 1567,
-    WebAudioDelayNode = 1568,
-    WebAudioDynamicsCompressorNode = 1569,
-    WebAudioGainNode = 1570,
-    WebAudioIIRFilterNode = 1571,
-    WebAudioMediaElementAudioSourceNode = 1572,
-    WebAudioOscillatorNode = 1573,
-    WebAudioPannerNode = 1574,
-    WebAudioPeriodicWave = 1575,
-    WebAudioStereoPannerNode = 1576,
-    WebAudioWaveShaperNode = 1577,
     CSSZoomReset = 1578,
     CSSZoomDocument = 1579,
     XSSAuditorBlockedScript = 1581,

third_party/WebKit/Source/modules/modules_idl_files.gni

@@ -628,7 +628,6 @@ modules_dependency_idl_files =
           "vibration/NavigatorVibration.idl",
           "vr/NavigatorVR.idl",
           "wake_lock/ScreenWakeLock.idl",
-          "webaudio/WindowWebAudio.idl",
           "webaudio/WindowAudioWorklet.idl",
           "webauth/NavigatorAuth.idl",
           "webdatabase/WindowWebDatabase.idl",

third_party/WebKit/Source/modules/webaudio/DOMWindowWebAudio.h

-// Copyright (c) 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// TODO: This is a dummy header file required by the generated binding code.
-// This file should be removed after fixing the code generator.

third_party/WebKit/Source/modules/webaudio/WindowWebAudio.idl

-// Copyright (c) 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-[
-    ImplementedAs=DOMWindowWebAudio,
-] partial interface Window {
-    // The individual constructible AudioNodes.
-    [MeasureAs=WebAudioAnalyserNode] attribute AnalyserNodeConstructor AnalyserNode;
-    [MeasureAs=WebAudioAudioBuffer] attribute AudioBufferConstructor AudioBuffer;
-    [MeasureAs=WebAudioAudioBufferSourceNode] attribute AudioBufferSourceNodeConstructor AudioBufferSourceNode;
-    [MeasureAs=WebAudioBiquadFilterNode] attribute BiquadFilterNodeConstructor BiquadFilterNode;
-    [MeasureAs=WebAudioChannelMergerNode] attribute ChannelMergerNodeConstructor ChannelMergerNode;
-    [MeasureAs=WebAudioChannelSplitterNode] attribute ChannelSplitterNodeConstructor ChannelSplitterNode;
-    [MeasureAs=WebAudioConstantSourceNode] attribute ConstantSourceNodeConstructor ConstantSourceNode;
-    [MeasureAs=WebAudioConvolverNode] attribute ConvolverNodeConstructor ConvolverNode;
-    [MeasureAs=WebAudioDelayNode] attribute DelayNodeConstructor DelayNode;
-    [MeasureAs=WebAudioDynamicsCompressorNode] attribute DynamicsCompressorNodeConstructor DynamicsCompressorNode;
-    [MeasureAs=WebAudioGainNode] attribute GainNodeConstructor GainNode;
-    [MeasureAs=WebAudioIIRFilterNode] attribute IIRFilterNodeConstructor IIRFilterNode;
-    [MeasureAs=WebAudioMediaElementAudioSourceNode] attribute MediaElementAudioSourceNodeConstructor MediaElementAudioSourceNode;
-    [MeasureAs=WebAudioOscillatorNode] attribute OscillatorNodeConstructor OscillatorNode;
-    [MeasureAs=WebAudioPannerNode] attribute PannerNodeConstructor PannerNode;
-    [MeasureAs=WebAudioPeriodicWave] attribute PeriodicWaveConstructor PeriodicWave;
-    [MeasureAs=WebAudioStereoPannerNode] attribute StereoPannerNodeConstructor StereoPannerNode;
-    [MeasureAs=WebAudioWaveShaperNode] attribute WaveShaperNodeConstructor WaveShaperNode;
-};