Move atomic ops and related files to base library

src/v8.cc

Index: src/v8.cc
diff --git a/src/v8.cc b/src/v8.cc
index 38e00fe717102e7b012c0365fa4952be48ee0cf9..8aba51ac9a67a4260d85e37e42286f48e0b427cf 100644
--- a/src/v8.cc
+++ b/src/v8.cc
@@ -5,6 +5,7 @@
 #include "src/v8.h"
 
 #include "src/assembler.h"
+#include "src/base/once.h"
 #include "src/isolate.h"
 #include "src/elements.h"
 #include "src/bootstrapper.h"
@@ -18,7 +19,6 @@
 #endif
 #include "src/lithium-allocator.h"
 #include "src/objects.h"
-#include "src/once.h"
 #include "src/platform.h"
 #include "src/sampler.h"
 #include "src/runtime-profiler.h"
@@ -111,7 +111,7 @@ void V8::InitializeOncePerProcessImpl() {
 
 
 void V8::InitializeOncePerProcess() {
-  CallOnce(&init_once, &InitializeOncePerProcessImpl);
+  base::CallOnce(&init_once, &InitializeOncePerProcessImpl);
 }