command_buffer: Remove hash_tables.h, simplify atomicops.h

gpu/command_buffer/client/query_tracker.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/client/query_tracker.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 
@@ skipping 133 matching lines @@
   MarkAsPending(gl->helper()->InsertToken());
 }
 
 bool QueryTracker::Query::CheckResultsAvailable(
     CommandBufferHelper* helper) {
   if (Pending()) {
     if (info_.sync->process_count == submit_count_ ||
         helper->IsContextLost()) {
       // Need a MemoryBarrier here so that sync->result read after
       // sync->process_count.
-      gpu::MemoryBarrier();
+      base::subtle::MemoryBarrier();
       switch (target()) {
         case GL_COMMANDS_ISSUED_CHROMIUM:
           result_ = std::min(info_.sync->result,
                              static_cast<uint64>(0xFFFFFFFFL));
           break;
         case GL_LATENCY_QUERY_CHROMIUM:
           DCHECK(info_.sync->result >= client_begin_time_us_);
           result_ = std::min(info_.sync->result - client_begin_time_us_,
                              static_cast<uint64>(0xFFFFFFFFL));
           break;
@@ skipping 91 matching lines @@
     }
 
     query_sync_manager_.Free(query->info_);
     it = removed_queries_.erase(it);
     delete query;
   }
 }
 
 }  // namespace gles2
 }  // namespace gpu