Rename "NoBarrier" memory operations to "Relaxed".

src/execution.h

 // Copyright 2014 the V8 project 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 V8_EXECUTION_H_
 #define V8_EXECUTION_H_
 
 #include "src/allocation.h"
 #include "src/base/atomicops.h"
 #include "src/globals.h"
@@ skipping 181 matching lines @@
     // one without the real_ prefix.
     uintptr_t real_jslimit_;  // Actual JavaScript stack limit set for the VM.
     uintptr_t real_climit_;  // Actual C++ stack limit set for the VM.
 
     // jslimit_ and climit_ can be read without any lock.
     // Writing requires the ExecutionAccess lock.
     base::AtomicWord jslimit_;
     base::AtomicWord climit_;
 
     uintptr_t jslimit() {
-      return bit_cast<uintptr_t>(base::NoBarrier_Load(&jslimit_));
+      return bit_cast<uintptr_t>(base::Relaxed_Load(&jslimit_));
     }
     void set_jslimit(uintptr_t limit) {
-      return base::NoBarrier_Store(&jslimit_,
-                                   static_cast<base::AtomicWord>(limit));
+      return base::Relaxed_Store(&jslimit_,
+                                 static_cast<base::AtomicWord>(limit));
     }
     uintptr_t climit() {
-      return bit_cast<uintptr_t>(base::NoBarrier_Load(&climit_));
+      return bit_cast<uintptr_t>(base::Relaxed_Load(&climit_));
     }
     void set_climit(uintptr_t limit) {
-      return base::NoBarrier_Store(&climit_,
-                                   static_cast<base::AtomicWord>(limit));
+      return base::Relaxed_Store(&climit_,
+                                 static_cast<base::AtomicWord>(limit));
     }
 
     PostponeInterruptsScope* postpone_interrupts_;
     int interrupt_flags_;
   };
 
   // TODO(isolates): Technically this could be calculated directly from a
   //                 pointer to StackGuard.
   Isolate* isolate_;
   ThreadLocal thread_local_;
 
   friend class Isolate;
   friend class StackLimitCheck;
   friend class PostponeInterruptsScope;
 
   DISALLOW_COPY_AND_ASSIGN(StackGuard);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_EXECUTION_H_