Rename "NoBarrier" memory operations to "Relaxed".

src/tracing/trace-event.h

 // Copyright 2015 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 SRC_TRACING_TRACE_EVENT_H_
 #define SRC_TRACING_TRACE_EVENT_H_
 
 #include <stddef.h>
 #include <memory>
 
@@ skipping 89 matching lines @@
 // void TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
 //     const uint8_t* category_group_enabled,
 //     const char* name,
 //     uint64_t id)
 #define TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION             \
   v8::internal::tracing::TraceEventHelper::GetCurrentPlatform() \
       ->UpdateTraceEventDuration
 
 // Defines atomic operations used internally by the tracing system.
 #define TRACE_EVENT_API_ATOMIC_WORD v8::base::AtomicWord
-#define TRACE_EVENT_API_ATOMIC_LOAD(var) v8::base::NoBarrier_Load(&(var))
+#define TRACE_EVENT_API_ATOMIC_LOAD(var) v8::base::Relaxed_Load(&(var))
 #define TRACE_EVENT_API_ATOMIC_STORE(var, value) \
-  v8::base::NoBarrier_Store(&(var), (value))
+  v8::base::Relaxed_Store(&(var), (value))
 
 ////////////////////////////////////////////////////////////////////////////////
 
 // Implementation detail: trace event macros create temporary variables
 // to keep instrumentation overhead low. These macros give each temporary
 // variable a unique name based on the line number to prevent name collisions.
 #define INTERNAL_TRACE_EVENT_UID3(a, b) trace_event_unique_##a##b
 #define INTERNAL_TRACE_EVENT_UID2(a, b) INTERNAL_TRACE_EVENT_UID3(a, b)
 #define INTERNAL_TRACE_EVENT_UID(name_prefix) \
   INTERNAL_TRACE_EVENT_UID2(name_prefix, __LINE__)
@@ skipping 468 matching lines @@
   bool has_parent_scope_;
   Data* p_data_;
   Data data_;
 };
 
 }  // namespace tracing
 }  // namespace internal
 }  // namespace v8
 
 #endif  // SRC_TRACING_TRACE_EVENT_H_