Rename "NoBarrier" memory operations to "Relaxed".

test/cctest/cctest.h

 // Copyright 2008 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 92 matching lines @@
   ~CcTest() { i::DeleteArray(file_); }
   void Run();
   static CcTest* last() { return last_; }
   CcTest* prev() { return prev_; }
   const char* file() { return file_; }
   const char* name() { return name_; }
   bool enabled() { return enabled_; }
 
   static v8::Isolate* isolate() {
     CHECK(isolate_ != NULL);
-    v8::base::NoBarrier_Store(&isolate_used_, 1);
+    v8::base::Relaxed_Store(&isolate_used_, 1);
     return isolate_;
   }
 
   static i::Isolate* InitIsolateOnce() {
     if (!initialize_called_) InitializeVM();
     return i_isolate();
   }
 
   static i::Isolate* i_isolate() {
     return reinterpret_cast<i::Isolate*>(isolate());
@@ skipping 481 matching lines @@
 
   const char* data() const { return data_; }
 
   size_t length() const { return strlen(data_); }
 
  private:
   const char* data_;
 };
 
 #endif  // ifndef CCTEST_H_