Remove calls to HandleScope default ctor.

Source/bindings/v8/V8Binding.h

 /*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2012 Ericsson AB. 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.
@@ skipping 615 matching lines @@
     }
 
     // Attaches |environment| to |function| and returns it.
     inline v8::Local<v8::Function> createClosure(v8::FunctionCallback function, v8::Handle<v8::Value> environment)
     {
         return v8::FunctionTemplate::New(function, environment)->GetFunction();
     }
 
     v8::Local<v8::Value> getHiddenValueFromMainWorldWrapper(v8::Isolate*, ScriptWrappable*, v8::Handle<v8::String> key);
 
+    v8::Isolate* getIsolateFromScriptExecutionContext(ScriptExecutionContext*);
+
 } // namespace WebCore
 
 #endif // V8Binding_h