Update from https://crrev.com/309415

gpu/command_buffer/build_gles2_cmd_buffer.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 GLES2 command buffers."""
 
 import itertools
 import os
 import os.path
@@ skipping 3156 matching lines @@
 
     consts = func.GetCmdConstants()
     for const in consts:
       file.Write("  static const %s %s = %s;\n" %
                  (const.cmd_type, const.name, const.GetConstantValue()))
 
     file.Write("};\n")
     file.Write("\n")
 
     size = len(args) * _SIZE_OF_UINT32 + _SIZE_OF_COMMAND_HEADER
-    file.Write("COMPILE_ASSERT(sizeof(%s) == %d,\n" % (func.name, size))
-    file.Write("               Sizeof_%s_is_not_%d);\n" % (func.name, size))
-    file.Write("COMPILE_ASSERT(offsetof(%s, header) == 0,\n" % func.name)
-    file.Write("               OffsetOf_%s_header_not_0);\n" % func.name)
+    file.Write("static_assert(sizeof(%s) == %d,\n" % (func.name, size))
+    file.Write("              \"size of %s should be %d\");\n" %
+               (func.name, size))
+    file.Write("static_assert(offsetof(%s, header) == 0,\n" % func.name)
+    file.Write("              \"offset of %s header should be 0\");\n" %
+               func.name)
     offset = _SIZE_OF_COMMAND_HEADER
     for arg in args:
-      file.Write("COMPILE_ASSERT(offsetof(%s, %s) == %d,\n" %
+      file.Write("static_assert(offsetof(%s, %s) == %d,\n" %
                  (func.name, arg.name, offset))
-      file.Write("               OffsetOf_%s_%s_not_%d);\n" %
+      file.Write("              \"offset of %s %s should be %d\");\n" %
                  (func.name, arg.name, offset))
       offset += _SIZE_OF_UINT32
     if not result == None and len(result) > 1:
       offset = 0;
       for line in result:
         parts = line.split()
         name = parts[-1]
         check = """
-COMPILE_ASSERT(offsetof(%(cmd_name)s::Result, %(field_name)s) == %(offset)d,
-               OffsetOf_%(cmd_name)s_Result_%(field_name)s_not_%(offset)d);
+static_assert(offsetof(%(cmd_name)s::Result, %(field_name)s) == %(offset)d,
+              "offset of %(cmd_name)s Result %(field_name)s should be "
+              "%(offset)d");
 """
         file.Write((check.strip() + "\n") % {
               'cmd_name': func.name,
               'field_name': name,
               'offset': offset,
             })
         offset += _SIZE_OF_UINT32
     file.Write("\n")
 
   def WriteHandlerImplementation(self, func, file):
@@ skipping 6027 matching lines @@
   Format(gen.generated_cpp_filenames)
 
   if gen.errors > 0:
     print "%d errors" % gen.errors
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))