Implemented new fence syncs which replaces the old sync points.

gpu/command_buffer/common/gles2_cmd_format.h

 // 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.
 
 // This file defines the GLES2 command buffer commands.
 
 #ifndef GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 #define GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 
 
 #include <KHR/khrplatform.h>
 
 #include <stdint.h>
 #include <string.h>
 
 #include "base/atomicops.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "gpu/command_buffer/common/bitfield_helpers.h"
 #include "gpu/command_buffer/common/cmd_buffer_common.h"
+#include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/common/gles2_cmd_ids.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 
 // GL types are forward declared to avoid including the GL headers. The problem
 // is determining which GL headers to include from code that is common to the
 // client and service sides (GLES2 or one of several GL implementations).
 typedef unsigned int GLenum;
 typedef unsigned int GLbitfield;
 typedef unsigned int GLuint;
 typedef int GLint;
@@ skipping 164 matching lines @@
   int32_t matrix_stride;
   int32_t is_row_major;
 };
 
 // The format of the bucket filled out by GetUniformsivES3CHROMIUM
 struct UniformsES3Header {
   uint32_t num_uniforms;
   // UniformES3Info uniforms[num_uniforms];
 };
 
+// The format of fence sync tokens.
+struct SyncToken {
+  CommandBufferNamespace namespace_id;
+  uint64_t command_buffer_id;
+  uint32_t release_count;
+
+  bool operator<(const SyncToken& 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))));
+  }
+};
+
 // The format of QuerySync used by EXT_occlusion_query_boolean
 struct QuerySync {
   void Reset() {
     process_count = 0;
     result = 0;
   }
 
   base::subtle::Atomic32 process_count;
   uint64_t result;
 };
@@ skipping 157 matching lines @@
     "offset of CreateAndConsumeTextureCHROMIUMImmediate.client_id should be 8");
 
 
 #pragma pack(pop)
 
 }  // namespace cmd
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_