Move atomic ops and related files to base library

src/platform/semaphore.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PLATFORM_SEMAPHORE_H_
 #define V8_PLATFORM_SEMAPHORE_H_
 
-#include "src/lazy-instance.h"
+#include "src/base/lazy-instance.h"
 #if V8_OS_WIN
-#include "src/win32-headers.h"
+#include "src/base/win32-headers.h"
 #endif
 
 #if V8_OS_MACOSX
 #include <mach/semaphore.h>  // NOLINT
 #elif V8_OS_POSIX
 #include <semaphore.h>  // NOLINT
 #endif
 
 namespace v8 {
 namespace internal {
@@ skipping 62 matching lines @@
 
 template <int N>
 struct CreateSemaphoreTrait {
   static Semaphore* Create() {
     return new Semaphore(N);
   }
 };
 
 template <int N>
 struct LazySemaphore {
-  typedef typename LazyDynamicInstance<
+  typedef typename v8::base::LazyDynamicInstance<
       Semaphore,
       CreateSemaphoreTrait<N>,
-      ThreadSafeInitOnceTrait>::type type;
+      v8::base::ThreadSafeInitOnceTrait>::type type;
 };
 
 #define LAZY_SEMAPHORE_INITIALIZER LAZY_DYNAMIC_INSTANCE_INITIALIZER
 
 } }  // namespace v8::internal
 
 #endif  // V8_PLATFORM_SEMAPHORE_H_