Merge 107170 - DOM mutations should not be delivered on worker threads

Source/WebCore/bindings/v8/V8RecursionScope.h

 /*
  * Copyright (C) 2011 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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef V8RecursionScope_h
 #define V8RecursionScope_h
 
 #include "V8Binding.h"
 
 namespace WebCore {
 
+class ScriptExecutionContext;
+
 class V8RecursionScope {
     WTF_MAKE_NONCOPYABLE(V8RecursionScope);
 public:
-    V8RecursionScope() { V8BindingPerIsolateData::current()->incrementRecursionLevel(); }
+    explicit V8RecursionScope(ScriptExecutionContext* context)
+        : m_context(context)
+    {
+        V8BindingPerIsolateData::current()->incrementRecursionLevel();
+    }
+
     ~V8RecursionScope()
     {
         if (!V8BindingPerIsolateData::current()->decrementRecursionLevel())
-            didLeaveScriptContext();
+            didLeaveScriptContext(m_context);
     }
 
     static int recursionLevel() { return V8BindingPerIsolateData::current()->recursionLevel(); }
 
 private:
-    static void didLeaveScriptContext();
+    static void didLeaveScriptContext(ScriptExecutionContext*);
+
+    ScriptExecutionContext* m_context;
 };
 
 } // namespace WebCore
 
 #endif // V8RecursionScope_h