Make ClassicPendingScript always become ready asynchronously.

third_party/WebKit/Source/core/dom/ClassicPendingScript.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 ClassicPendingScript_h
 #define ClassicPendingScript_h
 
 #include "bindings/core/v8/ScriptStreamer.h"
 #include "core/dom/ClassicScript.h"
 #include "core/dom/PendingScript.h"
@@ skipping 44 matching lines @@
   void StartStreamingIfPossible(Document*, ScriptStreamer::Type) override;
   KURL UrlForClassicScript() const override;
   void RemoveFromMemoryCache() override;
   void DisposeInternal() override;
 
   void Prefinalize();
 
  private:
   enum ReadyState {
     // These states are considered "not ready".
+    kInConstructor,
     kWaitingForResource,
     kWaitingForStreaming,
     // These states are considered "ready".
     kReady,
     kErrorOccurred,
   };
 
   ClassicPendingScript(ScriptElementBase*,
                        ScriptResource*,
                        const TextPosition&);
@@ skipping 20 matching lines @@
   // This is a temporary flag to confirm that ClassicPendingScript is not
   // touched after its refinalizer call and thus https://crbug.com/715309
   // doesn't break assumptions.
   // TODO(hiroshige): Check the state in more general way.
   bool prefinalizer_called_ = false;
 };
 
 }  // namespace blink
 
 #endif  // PendingScript_h