Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/OscillatorNode.cpp

Index: Source/modules/webaudio/OscillatorNode.cpp
diff --git a/Source/modules/webaudio/OscillatorNode.cpp b/Source/modules/webaudio/OscillatorNode.cpp
index f62e7125b6e70acdca01471c1fca20ec4e489e3a..b62f8244ce254e74767da1609ebf8843b84d99a3 100644
--- a/Source/modules/webaudio/OscillatorNode.cpp
+++ b/Source/modules/webaudio/OscillatorNode.cpp
@@ -29,7 +29,6 @@
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
-#include "modules/webaudio/AudioContext.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/PeriodicWave.h"
 #include "platform/audio/AudioUtilities.h"
@@ -342,7 +341,7 @@ bool OscillatorHandler::propagatesSilence() const
 
 // ----------------------------------------------------------------
 
-OscillatorNode::OscillatorNode(AudioContext& context, float sampleRate)
+OscillatorNode::OscillatorNode(AbstractAudioContext& context, float sampleRate)
     : AudioScheduledSourceNode(context)
     // Use musical pitch standard A440 as a default.
     , m_frequency(AudioParam::create(context, 440))
@@ -352,7 +351,7 @@ OscillatorNode::OscillatorNode(AudioContext& context, float sampleRate)
     setHandler(OscillatorHandler::create(*this, sampleRate, m_frequency->handler(), m_detune->handler()));
 }
 
-OscillatorNode* OscillatorNode::create(AudioContext& context, float sampleRate)
+OscillatorNode* OscillatorNode::create(AbstractAudioContext& context, float sampleRate)
 {
     return new OscillatorNode(context, sampleRate);
 }