Split "Online" and "Offline" AudioContext processing

Source/modules/webaudio/AudioParam.cpp

Index: Source/modules/webaudio/AudioParam.cpp
diff --git a/Source/modules/webaudio/AudioParam.cpp b/Source/modules/webaudio/AudioParam.cpp
index c584a265efaf2bf4bf8dbc0ebafc2e4d24498507..2d2eb9e133499f337487d4afde7eb6928352bf79 100644
--- a/Source/modules/webaudio/AudioParam.cpp
+++ b/Source/modules/webaudio/AudioParam.cpp
@@ -38,10 +38,10 @@ namespace blink {
 const double AudioParamHandler::DefaultSmoothingConstant = 0.05;
 const double AudioParamHandler::SnapThreshold = 0.001;
 
-AudioContext* AudioParamHandler::context() const
+AbstractAudioContext* AudioParamHandler::context() const
 {
     // TODO(tkent): We can remove this dangerous function by removing
-    // AudioContext dependency from AudioParamTimeline.
+    // AbstractAudioContext dependency from AudioParamTimeline.
     ASSERT_WITH_SECURITY_IMPLICATION(deferredTaskHandler().isAudioThread());
     return &m_context;
 }
@@ -194,13 +194,13 @@ void AudioParamHandler::disconnect(AudioNodeOutput& output)
 
 // ----------------------------------------------------------------
 
-AudioParam::AudioParam(AudioContext& context, double defaultValue)
+AudioParam::AudioParam(AbstractAudioContext& context, double defaultValue)
     : m_handler(AudioParamHandler::create(context, defaultValue))
     , m_context(context)
 {
 }
 
-AudioParam* AudioParam::create(AudioContext& context, double defaultValue)
+AudioParam* AudioParam::create(AbstractAudioContext& context, double defaultValue)
 {
     return new AudioParam(context, defaultValue);
 }