Apply script preprocessor to Web page scripts only.

Source/bindings/v8/ScriptController.h

 /*
  * Copyright (C) 2008, 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 78 matching lines @@
     bool executeIfJavaScriptURL(const KURL&, ShouldReplaceDocumentIfJavaScriptURL shouldReplaceDocumentIfJavaScriptURL = ReplaceDocumentIfJavaScriptURL);
 
     // This function must be called from the main thread. It is safe to call it repeatedly.
     static void initializeThreading();
 
     v8::Local<v8::Value> compileAndRunScript(const ScriptSourceCode&);
 
     // Evaluate JavaScript in the main world.
     // The caller must hold an execution context.
     ScriptValue evaluate(const ScriptSourceCode&);
+    // Evaluate Web-origin JavaScript in the main world. (Not for system uses)

[pfeldman, 2013/05/29 15:03:52]

Insert blank line above the comment. I think this brings in confusion on the
caller side. Now every caller needs to think whether its script it
"FromWebPage".

+    ScriptValue evaluateFromWebPage(const ScriptSourceCode&);
 
     // Executes JavaScript in an isolated world. The script gets its own global scope,
     // its own prototypes for intrinsic JavaScript objects (String, Array, and so-on),
     // and its own wrappers for all DOM nodes and DOM constructors.
     //
     // If an isolated world with the specified ID already exists, it is reused.
     // Otherwise, a new world is created.
     //
     // FIXME: Get rid of extensionGroup here.
     void evaluateInIsolatedWorld(int worldID, const Vector<ScriptSourceCode>& sources, int extensionGroup, Vector<ScriptValue>* results);
@@ skipping 85 matching lines @@
     // to calls on the destroyed window object, we return a proxy NPObject
     // which wraps the underlying window object. The wrapped window object
     // pointer in this object is cleared out when the window object is
     // destroyed.
     NPObject* m_wrappedWindowScriptNPObject;
 };
 
 } // namespace WebCore
 
 #endif // ScriptController_h