Worklet: Separate Worklet into MainThreadWorklet and ThreadedWorklet

third_party/WebKit/Source/modules/webaudio/AudioWorklet.cpp

Index: third_party/WebKit/Source/modules/webaudio/AudioWorklet.cpp
diff --git a/third_party/WebKit/Source/modules/webaudio/AudioWorklet.cpp b/third_party/WebKit/Source/modules/webaudio/AudioWorklet.cpp
index 0d8ade7aef4fa3eb7bbfc9026809e2ef52bc03db..39e341d1ce049773c58b32fd7242e6daf1b73498 100644
--- a/third_party/WebKit/Source/modules/webaudio/AudioWorklet.cpp
+++ b/third_party/WebKit/Source/modules/webaudio/AudioWorklet.cpp
@@ -17,7 +17,7 @@ AudioWorklet* AudioWorklet::Create(LocalFrame* frame) {
 }
 
 AudioWorklet::AudioWorklet(LocalFrame* frame)
-    : Worklet(frame), worklet_messaging_proxy_(nullptr) {}
+    : ThreadedWorklet(frame), worklet_messaging_proxy_(nullptr) {}
 
 AudioWorklet::~AudioWorklet() {
   if (worklet_messaging_proxy_)
@@ -45,7 +45,7 @@ WorkletGlobalScopeProxy* AudioWorklet::GetWorkletGlobalScopeProxy() const {
 }
 
 DEFINE_TRACE(AudioWorklet) {
-  Worklet::Trace(visitor);
+  ThreadedWorklet::Trace(visitor);
 }
 
 }  // namespace blink