Worklet: Separate Worklet into MainThreadWorklet and ThreadedWorklet

third_party/WebKit/Source/core/workers/Worklet.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/workers/Worklet.h"
 
-#include "bindings/core/v8/ScriptSourceCode.h"
-#include "bindings/core/v8/V8Binding.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/Document.h"
-#include "core/dom/ExceptionCode.h"
 #include "core/frame/LocalFrame.h"
 #include "core/workers/WorkletGlobalScopeProxy.h"
-#include "platform/wtf/WTF.h"
 
 namespace blink {
 
 Worklet::Worklet(LocalFrame* frame)
     : ContextLifecycleObserver(frame->GetDocument()), frame_(frame) {}
 
-ScriptPromise Worklet::import(ScriptState* script_state, const String& url) {
-  DCHECK(IsMainThread());
-  if (!GetExecutionContext()) {
-    return ScriptPromise::RejectWithDOMException(
-        script_state, DOMException::Create(kInvalidStateError,
-                                           "This frame is already detached"));
-  }
-
-  KURL script_url = GetExecutionContext()->CompleteURL(url);
-  if (!script_url.IsValid()) {
-    return ScriptPromise::RejectWithDOMException(
-        script_state, DOMException::Create(
-                          kSyntaxError, "'" + url + "' is not a valid URL."));
-  }
-
-  if (!IsInitialized())
-    Initialize();
-
-  ScriptPromiseResolver* resolver = ScriptPromiseResolver::Create(script_state);
-  ScriptPromise promise = resolver->Promise();
-
-  WorkletScriptLoader* script_loader =
-      WorkletScriptLoader::Create(frame_->GetDocument()->Fetcher(), this);
-  loader_and_resolvers_.Set(script_loader, resolver);
-  script_loader->FetchScript(script_url);
-  return promise;
-}
-
-void Worklet::NotifyWorkletScriptLoadingFinished(
-    WorkletScriptLoader* script_loader,
-    const ScriptSourceCode& source_code) {
-  DCHECK(IsMainThread());
-  ScriptPromiseResolver* resolver = loader_and_resolvers_.at(script_loader);
-  loader_and_resolvers_.erase(script_loader);
-
-  if (!script_loader->WasScriptLoadSuccessful()) {
-    resolver->Reject(DOMException::Create(kNetworkError));
-    return;
-  }
-
-  GetWorkletGlobalScopeProxy()->EvaluateScript(source_code);
-  resolver->Resolve();
-}
-
 void Worklet::ContextDestroyed(ExecutionContext*) {
   DCHECK(IsMainThread());
   if (IsInitialized())
     GetWorkletGlobalScopeProxy()->TerminateWorkletGlobalScope();
-  for (const auto& script_loader : loader_and_resolvers_.Keys())
-    script_loader->Cancel();
-  loader_and_resolvers_.Clear();
   frame_ = nullptr;
 }
 
 DEFINE_TRACE(Worklet) {
   visitor->Trace(frame_);
-  visitor->Trace(loader_and_resolvers_);
   ContextLifecycleObserver::Trace(visitor);
 }
 
 }  // namespace blink