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

gpu/command_buffer/common/sync_token.cc

Index: gpu/command_buffer/common/sync_token.cc
diff --git a/gpu/command_buffer/common/sync_token.cc b/gpu/command_buffer/common/sync_token.cc
deleted file mode 100644
index 15a7e34833a11b84a8adf894f9b40c7a2102626a..0000000000000000000000000000000000000000
--- a/gpu/command_buffer/common/sync_token.cc
+++ /dev/null
@@ -1,81 +0,0 @@
-// Copyright 2015 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/common/sync_token.h"
-
-#include <string.h>
-
-#include "base/logging.h"
-#include "base/rand_util.h"
-
-namespace gpu {
-
-namespace {
-
-struct SyncTokenInternal {
-  CommandBufferNamespace namespace_id;
-  uint64_t command_buffer_id;
-  uint64_t release_count;
-
-  bool operator<(const SyncTokenInternal& other) const {
-    // TODO(dyen): Once all our compilers support c++11, we can replace this
-    // long list of comparisons with std::tie().
-    return (namespace_id < other.namespace_id) ||
-           ((namespace_id == other.namespace_id) &&
-            ((command_buffer_id < other.command_buffer_id) ||
-             ((command_buffer_id == other.command_buffer_id) &&
-              (release_count < other.release_count))));
-  }
-};
-
-static_assert(sizeof(SyncTokenInternal) <= GL_SYNC_TOKEN_SIZE_CHROMIUM,
-              "SyncTokenInternal must not exceed GL_SYNC_TOKEN_SIZE_CHROMIUM");
-static_assert(sizeof(SyncToken) == GL_SYNC_TOKEN_SIZE_CHROMIUM,
-              "No additional members other than data are allowed in SyncToken");
-
-}  // namespace
-
-SyncToken::SyncToken() {
-  memset(data, 0, sizeof(data));
-}
-
-SyncToken::SyncToken(CommandBufferNamespace namespace_id,
-                     uint64_t command_buffer_id,
-                     uint64_t release_count) {
-  memset(data, 0, sizeof(data));
-  SetData(namespace_id, command_buffer_id, release_count);
-}
-
-CommandBufferNamespace SyncToken::GetNamespaceId() const {
-  return reinterpret_cast<const SyncTokenInternal*>(data)->namespace_id;
-}
-
-uint64_t SyncToken::GetCommandBufferId() const {
-  return reinterpret_cast<const SyncTokenInternal*>(data)->command_buffer_id;
-}
-
-uint64_t SyncToken::GetReleaseCount() const {
-  return reinterpret_cast<const SyncTokenInternal*>(data)->release_count;
-}
-
-void SyncToken::SetData(CommandBufferNamespace namespace_id,
-                        uint64_t command_buffer_id,
-                        uint64_t release_count) {
-  SyncTokenInternal* sync_token_internal =
-      reinterpret_cast<SyncTokenInternal*>(data);
-  sync_token_internal->namespace_id = namespace_id;
-  sync_token_internal->command_buffer_id = command_buffer_id;
-  sync_token_internal->release_count = release_count;
-}
-
-bool SyncToken::operator<(const SyncToken& other) const {
-  const SyncTokenInternal* sync_token_internal =
-      reinterpret_cast<const SyncTokenInternal*>(data);
-  const SyncTokenInternal* other_sync_token_internal =
-      reinterpret_cast<const SyncTokenInternal*>(other.data);
-
-  return *sync_token_internal < *other_sync_token_internal;
-}
-
-}  // namespace gpu