Move atomic ops and related files to base library

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 56d9a7777af6c39b3fcf47e06e8e561809e3982f..a52cfb5fdd111cf1adfd6b0a398c4aa5e7386f3e 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -8,7 +8,7 @@
 #include "include/v8-debug.h"
 #include "src/allocation.h"
 #include "src/assert-scope.h"
-#include "src/atomicops.h"
+#include "src/base/atomicops.h"
 #include "src/builtins.h"
 #include "src/contexts.h"
 #include "src/execution.h"
@@ -191,7 +191,7 @@ class ThreadId {
 
   int id_;
 
-  static Atomic32 highest_thread_id_;
+  static base::Atomic32 highest_thread_id_;
 
   friend class Isolate;
 };
@@ -1148,7 +1148,7 @@ class Isolate {
   static ThreadDataTable* thread_data_table_;
 
   // A global counter for all generated Isolates, might overflow.
-  static Atomic32 isolate_counter_;
+  static base::Atomic32 isolate_counter_;
 
   void Deinit();
 
@@ -1185,7 +1185,7 @@ class Isolate {
   // the Error object.
   bool IsErrorObject(Handle<Object> obj);
 
-  Atomic32 id_;
+  base::Atomic32 id_;
   EntryStackItem* entry_stack_;
   int stack_trace_nesting_level_;
   StringStream* incomplete_message_;
@@ -1196,7 +1196,7 @@ class Isolate {
   Counters* counters_;
   CodeRange* code_range_;
   RecursiveMutex break_access_;
-  Atomic32 debugger_initialized_;
+  base::Atomic32 debugger_initialized_;
   Logger* logger_;
   StackGuard stack_guard_;
   StatsTable* stats_table_;