Abstract out Modulator from V8PerContextData

third_party/WebKit/Source/core/dom/Modulator.h

 // Copyright 2017 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.
 
 #ifndef Modulator_h
 #define Modulator_h
 
+#include "bindings/core/v8/V8PerContextData.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/ReferrerPolicy.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class LocalFrame;
 class ModuleScript;
@@ skipping 14 matching lines @@
 
 // spec: "top-level module fetch flag"
 // https://html.spec.whatwg.org/multipage/webappapis.html#fetching-scripts-is-top-level
 enum class ModuleGraphLevel { TopLevelModuleFetch, DependentModuleFetch };
 
 // A Modulator is an interface for "environment settings object" concept for
 // module scripts.
 // https://html.spec.whatwg.org/#environment-settings-object
 //
 // A Modulator also serves as an entry point for various module spec algorithms.
-class CORE_EXPORT Modulator : public GarbageCollectedFinalized<Modulator> {
+class CORE_EXPORT Modulator : public GarbageCollectedFinalized<Modulator>,
+                              public V8PerContextData::Data {
+  USING_GARBAGE_COLLECTED_MIXIN(Modulator);
+
  public:
   static Modulator* from(LocalFrame*);
+  static Modulator* from(V8PerContextData*);
   virtual ~Modulator();
 
+  static void setModulator(LocalFrame*, Modulator*);
+  static void clearModulator(LocalFrame*);
+
   DEFINE_INLINE_VIRTUAL_TRACE() {}
 
   virtual ScriptModuleResolver* scriptModuleResolver() = 0;
   virtual WebTaskRunner* taskRunner() = 0;
   virtual ReferrerPolicy referrerPolicy() = 0;
   virtual SecurityOrigin* securityOrigin() = 0;
 
   // https://html.spec.whatwg.org/#resolve-a-module-specifier
   static KURL resolveModuleSpecifier(const String& moduleRequest,
                                      const KURL& baseURL);
 
   virtual ScriptModule compileModule(const String& script,
                                      const String& urlStr) = 0;
 
  private:
   friend class ModuleMap;
 
   // Fetches a single module script.
   // This is triggered from fetchSingle() implementation (which is in ModuleMap)
   // if the cached entry doesn't exist.
   // The client can be notified either synchronously or asynchronously.
   virtual void fetchNewSingleModule(const ModuleScriptFetchRequest&,
                                     ModuleGraphLevel,
                                     ModuleScriptLoaderClient*) = 0;
 };
 
 }  // namespace blink
 
 #endif