Send vsync timebase updates to the browser compositor

ui/gl/generate_bindings.py

 #!/usr/bin/env python
 # 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.
 
 """code generator for GL/GLES extension wrangler."""
 
 import os
 import collections
 import re
@@ skipping 1090 matching lines @@
   'names': ['glXSwapIntervalEXT'],
   'arguments': 'Display* dpy, GLXDrawable drawable, int interval', },
 { 'return_type': 'GLXFBConfig',
   'names': ['glXGetFBConfigFromVisualSGIX'],
   'arguments': 'Display* dpy, XVisualInfo* visualInfo', },
 { 'return_type': 'GLXContext',
   'names': ['glXCreateContextAttribsARB'],
   'arguments':
       'Display* dpy, GLXFBConfig config, GLXContext share_context, int direct, '
       'const int* attrib_list', },
+{ 'return_type': 'bool',
+  'names': ['glXGetSyncValuesOML'],
+  'arguments':
+      'Display* dpy, GLXDrawable drawable, int64* ust, int64* msc, '
+      'int64* sbc' },
 ]
 
 FUNCTION_SETS = [
   [GL_FUNCTIONS, 'gl', ['../../third_party/mesa/MesaLib/include/GL/glext.h',
     '../../third_party/khronos/GLES2/gl2ext.h'], []],
   [OSMESA_FUNCTIONS, 'osmesa', [], []],
   [EGL_FUNCTIONS, 'egl', ['../../third_party/khronos/EGL/eglext.h'],
     [
       'EGL_ANGLE_d3d_share_handle_client_buffer',
       'EGL_ANGLE_surface_d3d_texture_2d_share_handle',
@@ skipping 457 matching lines @@
     source_file.close()
 
   source_file = open(os.path.join(dir, 'gl_bindings_autogen_mock.cc'), 'wb')
   GenerateMockSource(source_file, GL_FUNCTIONS)
   source_file.close()
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))