Implemented new fence syncs which replaces the old sync points.

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index 597f5259e5fca114b6af92de75f9ce7c3cd81dd5..c2cd436321bfe7d99caa72471d9b8779df53fa58 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -4090,6 +4090,30 @@ _FUNCTION_INFO = {
     'chromium': True,
     'trace_level': 1,
   },
+  'InsertFenceSyncCHROMIUM': {
+    'type': 'Custom',
+    'impl_func': False,
+    'cmd_args': 'GLuint64 release_count',
+    'extension': "CHROMIUM_sync_point",
+    'chromium': True,
+    'trace_level': 1,
+  },
+  'GenSyncTokenCHROMIUM': {
+    'type': 'Custom',
+    'impl_func': False,
+    'extension': "CHROMIUM_sync_point",
+    'chromium': True,
+  },
+  'WaitSyncTokenCHROMIUM': {
+    'type': 'Custom',
+    'impl_func': False,
+    'cmd_args': 'GLuint namespace_id, '
+                'GLuint64 command_buffer_id, '
+                'GLuint64 release_count',
+    'client_test': False,
+    'extension': "CHROMIUM_sync_point",
+    'chromium': True,
+  },
   'DiscardBackbufferCHROMIUM': {
     'type': 'Custom',
     'impl_func': True,