Enable the AllowSuperUnsafeScript assert disabler in debug builds.

Source/platform/ScriptForbiddenScope.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ScriptForbiddenScope_h
 #define ScriptForbiddenScope_h
 
 #include "platform/PlatformExport.h"
 #include "wtf/Assertions.h"
 #include "wtf/TemporaryChange.h"
@@ skipping 14 matching lines @@
     };
 
     // FIXME: This should be removed. AllowSuperUnsafeScript is used
     // to exceptionally allow script execution in ScriptForbiddenScope, because
     // some real-world plugins try to execute script in ScriptForbiddenScope.
     // This is unsafe and we should get rid of all the unsafe script executions.
     class PLATFORM_EXPORT AllowSuperUnsafeScript {
     public:
         AllowSuperUnsafeScript();
         ~AllowSuperUnsafeScript();
-#if !ASSERT_ENABLED
     private:
         TemporaryChange<unsigned> m_change;
-#endif
     };
 
     static bool isScriptForbidden();
 };
 
 } // namespace blink
 
 #endif // ScriptForbiddenScope_h