Move atomic ops and related files to base library

src/base/lazy-instance.h

Index: src/base/lazy-instance.h
diff --git a/src/lazy-instance.h b/src/base/lazy-instance.h
similarity index 97%
rename from src/lazy-instance.h
rename to src/base/lazy-instance.h
index e353362f286b761c17c07b3b9b4e158dcc41ed51..a20689a16c4accf69d212a90d8631eac693428b2 100644
--- a/src/lazy-instance.h
+++ b/src/base/lazy-instance.h
@@ -65,14 +65,14 @@
 //   The macro LAZY_DYNAMIC_INSTANCE_INITIALIZER must be used to initialize
 //   dynamic lazy instances.
 
-#ifndef V8_LAZY_INSTANCE_H_
-#define V8_LAZY_INSTANCE_H_
+#ifndef V8_BASE_LAZY_INSTANCE_H_
+#define V8_BASE_LAZY_INSTANCE_H_
 
 #include "src/base/macros.h"
-#include "src/once.h"
+#include "src/base/once.h"
 
 namespace v8 {
-namespace internal {
+namespace base {
 
 #define LAZY_STATIC_INSTANCE_INITIALIZER { V8_ONCE_INIT, { {} } }
 #define LAZY_DYNAMIC_INSTANCE_INITIALIZER { V8_ONCE_INIT, 0 }
@@ -232,6 +232,6 @@ struct LazyDynamicInstance {
       CreateTrait, InitOnceTrait, DestroyTrait> type;
 };
 
-} }  // namespace v8::internal
+} }  // namespace v8::base
 
-#endif  // V8_LAZY_INSTANCE_H_
+#endif  // V8_BASE_LAZY_INSTANCE_H_