Replace tests of ASSERT_ENABLED with ENABLE(ASSERT).

Source/platform/ScriptForbiddenScope.cpp

 // 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.
 
 #include "config.h"
 #include "platform/ScriptForbiddenScope.h"
 
 #include "wtf/Assertions.h"
 #include "wtf/MainThread.h"
 
 namespace WebCore {
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
 
 static unsigned s_scriptForbiddenCount = 0;
 
 ScriptForbiddenScope::ScriptForbiddenScope()
 {
     // FIXME: Support non-main threads.
     if (isMainThread())
         ++s_scriptForbiddenCount;
 }
 
@@ skipping 14 matching lines @@
 }
 
 ScriptForbiddenScope::AllowUserAgentScript::~AllowUserAgentScript()
 {
     ASSERT(!s_scriptForbiddenCount);
 }
 
 #endif
 
 } // namespace WebCore