[ES6 modules] Introduce ModuleScriptLoader

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

Index: third_party/WebKit/Source/core/dom/Modulator.h
diff --git a/third_party/WebKit/Source/core/dom/Modulator.h b/third_party/WebKit/Source/core/dom/Modulator.h
index 6f923196ec8333e0e90fe4fddcd3d2ff2b5dd196..6086a2425b2d9c368a3d07f81b89d9520d659c8d 100644
--- a/third_party/WebKit/Source/core/dom/Modulator.h
+++ b/third_party/WebKit/Source/core/dom/Modulator.h
@@ -8,10 +8,18 @@
 #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 SecurityOrigin;
+class ScriptModule;
+
+// 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.
@@ -22,9 +30,16 @@ class CORE_EXPORT Modulator : public GarbageCollectedMixin {
  public:
   static Modulator* from(LocalFrame*);
 
+  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);
+
+  // TODO(kouhei): script should be a ScriptSourceCode.
+  virtual ScriptModule compileModule(const String& script,
+                                     const String& urlStr) = 0;
 };
 
 }  // namespace blink