https://bugs.webkit.org/show_bug.cgi?id=97050

Reviewed by Eric Carlson.

.:

* Source/cmake/WebKitFeatures.cmake:

Source/JavaScriptCore:

* Configurations/FeatureDefines.xcconfig:

Source/WebCore:

The Web Audio API specification has undergone much review and some small API changes
have been made (mostly naming-related changes).  This patch adds an ENABLE_LEGACY_WEB_AUDIO
build option to allow ports to support the old names.

Tests changed:
audiobuffersource-playbackrate.html
audiobuffersource.html
note-grain-on-testing.js
oscillator-testing.js

* Configurations/FeatureDefines.xcconfig:
* GNUmakefile.features.am:
* Modules/webaudio/AudioBufferSourceNode.cpp:
(WebCore::AudioBufferSourceNode::startGrain):
(WebCore):
(WebCore::AudioBufferSourceNode::noteGrainOn):
* Modules/webaudio/AudioBufferSourceNode.h:
(AudioBufferSourceNode):
* Modules/webaudio/AudioBufferSourceNode.idl:
* Modules/webaudio/AudioScheduledSourceNode.cpp:
(WebCore::AudioScheduledSourceNode::start):
(WebCore::AudioScheduledSourceNode::stop):
(WebCore):
(WebCore::AudioScheduledSourceNode::noteOn):
(WebCore::AudioScheduledSourceNode::noteOff):
* Modules/webaudio/AudioScheduledSourceNode.h:
* Modules/webaudio/Oscillator.idl:
* page/FeatureObserver.h:

Source/WebKit/chromium:

* features.gypi:

Source/WebKit/mac:

* Configurations/FeatureDefines.xcconfig:

Source/WebKit2:

* Configurations/FeatureDefines.xcconfig:

Tools:

* Scripts/webkitperl/FeatureList.pm:

LayoutTests:

* webaudio/audiobuffersource-playbackrate.html:
* webaudio/audiobuffersource.html:
* webaudio/resources/note-grain-on-testing.js:
(playGrain):
* webaudio/resources/oscillator-testing.js:
(generateExponentialOscillatorSweep):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@129260 268f45cc-cd09-0410-ab3c-d52691b4dbfc