Allow assertions to be enabled in Blink Release builds.

Source/bindings/core/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 63 matching lines @@
     {
         if (!V8PerIsolateData::from(m_isolate)->decrementRecursionLevel())
             didLeaveScriptContext();
     }
 
     static int recursionLevel(v8::Isolate* isolate)
     {
         return V8PerIsolateData::from(isolate)->recursionLevel();
     }
 
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
     static bool properlyUsed(v8::Isolate* isolate)
     {
         return recursionLevel(isolate) > 0 || V8PerIsolateData::from(isolate)->internalScriptRecursionLevel() > 0;
     }
 #endif
 
     class MicrotaskSuppression {
     public:
         MicrotaskSuppression(v8::Isolate* isolate)
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
             : m_isolate(isolate)
 #endif
         {
             ASSERT(!ScriptForbiddenScope::isScriptForbidden());
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
             V8PerIsolateData::from(m_isolate)->incrementInternalScriptRecursionLevel();
 #endif
         }
 
         ~MicrotaskSuppression()
         {
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
             V8PerIsolateData::from(m_isolate)->decrementInternalScriptRecursionLevel();
 #endif
         }
 
     private:
-#ifndef NDEBUG
+#if ENABLE(ASSERT)
         v8::Isolate* m_isolate;
 #endif
     };
 
 private:
     void didLeaveScriptContext();
 
     v8::Isolate* m_isolate;
     ExecutionContext& m_executionContext;
 };
 
 } // namespace WebCore
 
 #endif // V8RecursionScope_h