Revert of Added SyncToken command buffer trait to help with IPC messages.

gpu/command_buffer/service/mailbox_manager_sync.cc

 // Copyright 2014 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/service/mailbox_manager_sync.h"
 
 #include <algorithm>
 #include <queue>
 
 #include "base/memory/linked_ptr.h"
 #include "base/synchronization/lock.h"
-#include "gpu/command_buffer/common/sync_token.h"
+#include "gpu/command_buffer/common/gles2_cmd_format.h"
 #include "gpu/command_buffer/service/texture_manager.h"
 #include "ui/gl/gl_fence.h"
 #include "ui/gl/gl_implementation.h"
 
 #if !defined(OS_MACOSX)
 #include "ui/gl/gl_fence_egl.h"
 #endif
 
 namespace gpu {
 namespace gles2 {
@@ skipping 11 matching lines @@
 #endif
 
 void CreateFenceLocked(const SyncToken& sync_token) {
 #if !defined(OS_MACOSX)
   g_lock.Get().AssertAcquired();
   if (gfx::GetGLImplementation() == gfx::kGLImplementationMockGL)
     return;
 
   std::queue<SyncTokenToFenceMap::iterator>& sync_points = g_sync_points.Get();
   SyncTokenToFenceMap& sync_point_to_fence = g_sync_point_to_fence.Get();
-  if (sync_token.GetReleaseCount()) {
+  if (sync_token.release_count) {
     while (!sync_points.empty() &&
            sync_points.front()->second->HasCompleted()) {
       sync_point_to_fence.erase(sync_points.front());
       sync_points.pop();
     }
     // Need to use EGL fences since we are likely not in a single share group.
     linked_ptr<gfx::GLFence> fence(make_linked_ptr(new gfx::GLFenceEGL));
     if (fence.get()) {
       std::pair<SyncTokenToFenceMap::iterator, bool> result =
           sync_point_to_fence.insert(std::make_pair(sync_token, fence));
@@ skipping 274 matching lines @@
 
   if (!needs_update.empty()) {
     for (const TextureUpdatePair& pair : needs_update) {
       pair.second.UpdateTexture(pair.first);
     }
   }
 }
 
 }  // namespace gles2
 }  // namespace gpu