Rename "NoBarrier" memory operations to "Relaxed".

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 3ea27298024334d7c15c16058d99d8d9160bbffb..8b38e86d0cff7dcc886f94a32517c26427dec0ff 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -62,7 +62,7 @@ namespace internal {
 base::Atomic32 ThreadId::highest_thread_id_ = 0;
 
 int ThreadId::AllocateThreadId() {
-  int new_id = base::NoBarrier_AtomicIncrement(&highest_thread_id_, 1);
+  int new_id = base::Relaxed_AtomicIncrement(&highest_thread_id_, 1);
   return new_id;
 }
 
@@ -189,7 +189,7 @@ void Isolate::InitializeOncePerProcess() {
   CHECK(thread_data_table_ == NULL);
   isolate_key_ = base::Thread::CreateThreadLocalKey();
 #if DEBUG
-  base::NoBarrier_Store(&isolate_key_created_, 1);
+  base::Relaxed_Store(&isolate_key_created_, 1);
 #endif
   thread_id_key_ = base::Thread::CreateThreadLocalKey();
   per_isolate_thread_data_key_ = base::Thread::CreateThreadLocalKey();
@@ -2344,7 +2344,7 @@ Isolate::Isolate(bool enable_serializer)
     base::LockGuard<base::Mutex> lock_guard(thread_data_table_mutex_.Pointer());
     CHECK(thread_data_table_);
   }
-  id_ = base::NoBarrier_AtomicIncrement(&isolate_counter_, 1);
+  id_ = base::Relaxed_AtomicIncrement(&isolate_counter_, 1);
   TRACE_ISOLATE(constructor);
 
   memset(isolate_addresses_, 0,
@@ -2390,7 +2390,7 @@ void Isolate::TearDown() {
   // direct pointer. We don't use Enter/Exit here to avoid
   // initializing the thread data.
   PerIsolateThreadData* saved_data = CurrentPerIsolateThreadData();
-  DCHECK(base::NoBarrier_Load(&isolate_key_created_) == 1);
+  DCHECK(base::Relaxed_Load(&isolate_key_created_) == 1);
   Isolate* saved_isolate =
       reinterpret_cast<Isolate*>(base::Thread::GetThreadLocal(isolate_key_));
   SetIsolateThreadLocals(this, NULL);