Stream scripts to V8 as they load - Blink side.

Source/core/dom/PendingScript.h

 /*
  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 20 matching lines @@
 #include "core/fetch/ResourceClient.h"
 #include "core/fetch/ResourceOwner.h"
 #include "core/fetch/ScriptResource.h"
 #include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/TextPosition.h"
 
 namespace blink {
 
-class ScriptResource;
+class ScriptStreamer;
 
 // A container for an external script which may be loaded and executed.
 //
 // A ResourcePtr alone does not prevent the underlying Resource
 // from purging its data buffer. This class holds a dummy client open for its
 // lifetime in order to guarantee that the data buffer will not be purged.
 class PendingScript FINAL : public ResourceOwner<ScriptResource> {
     ALLOW_ONLY_INLINE_ALLOCATION();
 public:
     PendingScript()
@@ skipping 21 matching lines @@
     ~PendingScript();
 
     PendingScript& operator=(const PendingScript& other)
     {
         if (this == &other)
             return *this;
 
         m_watchingForLoad = other.m_watchingForLoad;
         m_element = other.m_element;
         m_startingPosition = other.m_startingPosition;
-        this->ResourceOwner<ScriptResource, ResourceClient>::operator=(other);
-
+        m_streamer = other.m_streamer;
+        this->ResourceOwner<ScriptResource, ScriptResourceClient>::operator=(other);
         return *this;
     }
 
     TextPosition startingPosition() const { return m_startingPosition; }
     void setStartingPosition(const TextPosition& position) { m_startingPosition = position; }
 
-    void watchForLoad(ResourceClient*);
-    void stopWatchingForLoad(ResourceClient*);
+    void watchForLoad(ScriptResourceClient*);
+    void stopWatchingForLoad(ScriptResourceClient*);
 
     Element* element() const { return m_element.get(); }
     void setElement(Element* element) { m_element = element; }
     PassRefPtrWillBeRawPtr<Element> releaseElementAndClear();
 
     void setScriptResource(ScriptResource*);
 
     virtual void notifyFinished(Resource*);
+    virtual void notifyAppendData(ScriptResource*);
 
     void trace(Visitor*);
 
     ScriptSourceCode getSource(const KURL& documentURL, bool& errorOccurred) const;
 
+    void setStreamer(PassRefPtr<ScriptStreamer> streamer)
+    {
+        ASSERT(!m_streamer);
+        ASSERT(!m_watchingForLoad);
+        m_streamer = streamer;
+    }
+
+    bool isStreaming() const;
+
 private:
     bool m_watchingForLoad;
     RefPtrWillBeMember<Element> m_element;
     TextPosition m_startingPosition; // Only used for inline script tags.
+
+    RefPtr<ScriptStreamer> m_streamer;
 };
 
 }
 
 #endif