Update mojo sdk to rev 3d23dae011859a2aae49f1d1adde705c8e85d819

third_party/mojo/src/mojo/public/python/mojo_bindings/serialization.py

 # Copyright 2014 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.
 
 """Utility classes for serialization"""
 
 import struct
 
 
 # Format of a header for a struct or an array.
@@ skipping 150 matching lines @@
 
 
 def NeededPaddingForAlignment(value, alignment=8):
   """Returns the padding necessary to align value with the given alignment."""
   if value % alignment:
     return alignment - (value % alignment)
   return 0
 
 
 def _GetVersion(groups):
-  return sum([len(x.descriptors) for x in groups])
+  if not len(groups):
+    return 0
+  return max([x.GetMaxVersion() for x in groups])
 
 
 def _FilterGroups(groups, version):
-  return [group for group in groups if group.GetVersion() < version]
+  return [group.Filter(version) for
+          group in groups if group.GetMinVersion() <= version]
 
 
 def _GetStruct(groups):
   index = 0
   codes = [ '<' ]
   for group in groups:
     code = group.GetTypeCode()
     size = group.GetByteSize()
     needed_padding = NeededPaddingForAlignment(index, size)
     if needed_padding:
       codes.append('x' * needed_padding)
       index = index + needed_padding
     codes.append(code)
     index = index + size
   alignment_needed = NeededPaddingForAlignment(index)
   if alignment_needed:
     codes.append('x' * alignment_needed)
   return struct.Struct(''.join(codes))