Refactor Script(Loader|Runner): don't access Resources all over the place...

Source/core/dom/ScriptLoader.h

Index: Source/core/dom/ScriptLoader.h
diff --git a/Source/core/dom/ScriptLoader.h b/Source/core/dom/ScriptLoader.h
index 0fa6d52ce9a7970a2937952072177b6fe40f4c69..d657e8316354301cbf3f07a7931d83d635b2c64b 100644
--- a/Source/core/dom/ScriptLoader.h
+++ b/Source/core/dom/ScriptLoader.h
@@ -21,6 +21,7 @@
 #ifndef ScriptLoader_h
 #define ScriptLoader_h
 
+#include "core/dom/PendingScript.h"
 #include "core/fetch/FetchRequest.h"
 #include "core/fetch/ResourceClient.h"
 #include "core/fetch/ResourcePtr.h"
@@ -48,7 +49,7 @@ public:
     String scriptCharset() const { return m_characterEncoding; }
     String scriptContent() const;
     void executeScript(const ScriptSourceCode&, double* compilationFinishTime = 0);
-    void execute(ScriptResource*);
+    void execute();
 
     // XML parser calls these
     void dispatchLoadEvent();
@@ -72,6 +73,8 @@ public:
     void handleSourceAttribute(const String& sourceUrl);
     void handleAsyncAttribute();
 
+    bool isReady() const { return m_pendingScript.isReady(); }
+
 private:
     ScriptLoader(Element*, bool createdByParser, bool isEvaluated);
 
@@ -79,7 +82,6 @@ private:
     bool isScriptForEventSupported() const;
 
     bool fetchScript(const String& sourceUrl, FetchRequest::DeferOption);
-    void stopLoadRequest();
 
     ScriptLoaderClient* client() const;
 
@@ -101,6 +103,8 @@ private:
     bool m_willExecuteInOrder : 1;
     String m_characterEncoding;
     String m_fallbackCharacterEncoding;
+
+    PendingScript m_pendingScript;
 };
 
 ScriptLoader* toScriptLoaderIfPossible(Element*);