Move gpu hash_tables and atomicops stuff

gpu/command_buffer/client/query_tracker.cc

Index: gpu/command_buffer/client/query_tracker.cc
diff --git a/gpu/command_buffer/client/query_tracker.cc b/gpu/command_buffer/client/query_tracker.cc
index 54e8d850908414e1ded50077a26adfc947dac92d..5d08f2e7d1441dd6b3f566e1f2a55dec304169ab 100644
--- a/gpu/command_buffer/client/query_tracker.cc
+++ b/gpu/command_buffer/client/query_tracker.cc
@@ -4,9 +4,7 @@
 
 #include "../client/query_tracker.h"
 
-#if !defined(__native_client__)
-  #include "base/atomicops.h"
-#endif
+#include "../client/atomicops.h"
 #include "../client/cmd_buffer_helper.h"
 #include "../client/mapped_memory.h"
 
@@ -59,11 +57,7 @@ bool QueryTracker::Query::CheckResultsAvailable(
     if (info_.sync->process_count == submit_count_) {
       // Need a MemoryBarrier here so that sync->result read after
       // sync->process_count.
-      #if defined(__native_client__)
-        __sync_synchronize();
-      #else
-        base::subtle::MemoryBarrier();
-      #endif
+      gpu::MemoryBarrier();
       result_ = info_.sync->result;
       state_ = kComplete;
     } else {