Disable logging for the Threading test in cctest/test-api by default.

test/cctest/test-api.cc

 // Copyright 2011 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 21 matching lines @@
 #include "api.h"
 #include "compilation-cache.h"
 #include "execution.h"
 #include "snapshot.h"
 #include "platform.h"
 #include "utils.h"
 #include "cctest.h"
 #include "parser.h"
 #include "unicode-inl.h"
 
-static const bool kLogThreading = true;
+static const bool kLogThreading = false;
 
 static bool IsNaN(double x) {
 #ifdef WIN32
   return _isnan(x);
 #else
   return isnan(x);
 #endif
 }
 
 using ::v8::AccessorInfo;
@@ skipping 13851 matching lines @@
     CHECK(func2->CreationContext() == context2);
     CheckContextId(func2, 2);
     CHECK(instance2->CreationContext() == context2);
     CheckContextId(instance2, 2);
   }
 
   context1.Dispose();
   context2.Dispose();
   context3.Dispose();
 }