Move atomic-utils.h into base/

src/base/atomic-utils.h

Index: src/base/atomic-utils.h
diff --git a/src/atomic-utils.h b/src/base/atomic-utils.h
similarity index 99%
rename from src/atomic-utils.h
rename to src/base/atomic-utils.h
index 34e1cb0269ac37cce1392db05ffd578aae8340b4..ac90fd98a7130a2ec26ca6680f9c2acad3f08a57 100644
--- a/src/atomic-utils.h
+++ b/src/base/atomic-utils.h
@@ -11,7 +11,7 @@
 #include "src/base/macros.h"
 
 namespace v8 {
-namespace internal {
+namespace base {
 
 template <class T>
 class AtomicNumber {
@@ -169,7 +169,7 @@ class AtomicEnumSet {
   base::AtomicWord bits_;
 };
 
-}  // namespace internal
+}  // namespace base
 }  // namespace v8
 
 #endif  // #define V8_ATOMIC_UTILS_H_