Rename "NoBarrier" memory operations to "Relaxed".

src/debug/debug.cc

Index: src/debug/debug.cc
diff --git a/src/debug/debug.cc b/src/debug/debug.cc
index f257f67e29c2975e0529257a1e424091af0e633d..fd2dcc37d5289d2d38605cc039648f4a2c8c5e45 100644
--- a/src/debug/debug.cc
+++ b/src/debug/debug.cc
@@ -402,8 +402,8 @@ void Debug::ThreadInit() {
   thread_local_.async_task_count_ = 0;
   clear_suspended_generator();
   thread_local_.restart_fp_ = nullptr;
-  base::NoBarrier_Store(&thread_local_.current_debug_scope_,
-                        static_cast<base::AtomicWord>(0));
+  base::Relaxed_Store(&thread_local_.current_debug_scope_,
+                      static_cast<base::AtomicWord>(0));
   UpdateHookOnFunctionCall();
 }
 
@@ -2225,8 +2225,8 @@ DebugScope::DebugScope(Debug* debug)
       no_termination_exceptons_(debug_->isolate_,
                                 StackGuard::TERMINATE_EXECUTION) {
   // Link recursive debugger entry.
-  base::NoBarrier_Store(&debug_->thread_local_.current_debug_scope_,
-                        reinterpret_cast<base::AtomicWord>(this));
+  base::Relaxed_Store(&debug_->thread_local_.current_debug_scope_,
+                      reinterpret_cast<base::AtomicWord>(this));
 
   // Store the previous break id, frame id and return value.
   break_id_ = debug_->break_id();
@@ -2250,8 +2250,8 @@ DebugScope::DebugScope(Debug* debug)
 
 DebugScope::~DebugScope() {
   // Leaving this debugger entry.
-  base::NoBarrier_Store(&debug_->thread_local_.current_debug_scope_,
-                        reinterpret_cast<base::AtomicWord>(prev_));
+  base::Relaxed_Store(&debug_->thread_local_.current_debug_scope_,
+                      reinterpret_cast<base::AtomicWord>(prev_));
 
   // Restore to the previous break state.
   debug_->thread_local_.break_frame_id_ = break_frame_id_;