Have the DynamicsCompressorNode support multi-channel data

Have the DynamicsCompressorNode support multi-channel data
https://bugs.webkit.org/show_bug.cgi?id=77856

Patch by Raymond Liu <raymond.liu@intel.com> on 2012-02-22
Reviewed by Chris Rogers.

* platform/audio/DynamicsCompressor.cpp:
(WebCore::DynamicsCompressor::DynamicsCompressor):
(WebCore::DynamicsCompressor::setEmphasisStageParameters):
(WebCore::DynamicsCompressor::process):
(WebCore::DynamicsCompressor::reset):
(WebCore::DynamicsCompressor::setNumberOfChannels):
(WebCore):
* platform/audio/DynamicsCompressor.h:
(DynamicsCompressor):
* platform/audio/DynamicsCompressorKernel.cpp:
(WebCore::DynamicsCompressorKernel::DynamicsCompressorKernel):
(WebCore::DynamicsCompressorKernel::setNumberOfChannels):
(WebCore):
(WebCore::DynamicsCompressorKernel::setPreDelayTime):
(WebCore::DynamicsCompressorKernel::process):
(WebCore::DynamicsCompressorKernel::reset):
* platform/audio/DynamicsCompressorKernel.h:
(DynamicsCompressorKernel):
* webaudio/DynamicsCompressorNode.cpp:
(WebCore::DynamicsCompressorNode::DynamicsCompressorNode):
(WebCore::DynamicsCompressorNode::initialize):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@108538 268f45cc-cd09-0410-ab3c-d52691b4dbfc