[WIP] Introduce ScriptResourceData

third_party/WebKit/Source/core/loader/resource/ScriptResourceData.cpp

+// 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.
+
+#include "core/loader/resource/ScriptResourceData.h"
+
+#include "platform/HTTPNames.h"
+#include "platform/loader/fetch/CrossOriginAccessControl.h"
+#include "platform/network/mime/MIMETypeRegistry.h"
+
+namespace blink {
+
+// static
+bool ScriptResourceData::MimeTypeAllowedByNosniff(
+    const ResourceResponse& response) {
+  return ParseContentTypeOptionsHeader(
+             response.HttpHeaderField(HTTPNames::X_Content_Type_Options)) !=
+             kContentTypeOptionsNosniff ||
+         MIMETypeRegistry::IsSupportedJavaScriptMIMEType(
+             response.HttpContentType());
+}
+
+AccessControlStatus ScriptResourceData::CalculateAccessControlStatus() const {
+  if (cors_status_ == CORSStatus::kServiceWorkerOpaque)
+    return kOpaqueResource;
+
+  // FOXME
+  //  if (IsSameOriginOrCORSSuccessful())
+  //  return kSharableCrossOrigin;
+
+  return kNotSharableCrossOrigin;
+}
+
+}  // namespace blink