Replaced custom OrderedDict with collections.OrderedDict

Replaced custom OrderedDict with collections.OrderedDict

Now that python 2.7 is on all of the bots (see http://crbug.com/241769) there shouldn't be a need to keep using the custom implementation of OrderedDict that was added to maintain compatibility with older versions of python.
Therefore this change removes the custom implementation and replaces it with collections.OrderedDict.

[AWhetter, 2015-11-06 20:36:04]

Description was changed from

==========
Replaced custom OrderedDict with collections.OrderedDict

Now that python 2.7 is on all of the bots (see http://crbug.com/241769) there
shouldn't be a need to keep using the custom implementation of OrderedDict that
was added to maintain compatibility with older versions of python.
Therefore this change removes the custom implementation and replaces it with
collections.OrderedDict.

BUG=
==========

to

==========
Replaced custom OrderedDict with collections.OrderedDict

Now that python 2.7 is on all of the bots (see http://crbug.com/241769) there
shouldn't be a need to keep using the custom implementation of OrderedDict that
was added to maintain compatibility with older versions of python.
Therefore this change removes the custom implementation and replaces it with
collections.OrderedDict.
==========

[AWhetter, 2015-11-06 20:36:30]

Description was changed from

==========
Replaced custom OrderedDict with collections.OrderedDict

Now that python 2.7 is on all of the bots (see http://crbug.com/241769) there
shouldn't be a need to keep using the custom implementation of OrderedDict that
was added to maintain compatibility with older versions of python.
Therefore this change removes the custom implementation and replaces it with
collections.OrderedDict.
==========

to

==========
Now that python 2.7 is on all of the bots (see http://crbug.com/241769) there
shouldn't be a need to keep using the custom implementation of OrderedDict that
was added to maintain compatibility with older versions of python.
Therefore this change removes the custom implementation and replaces it with
collections.OrderedDict.
==========

[AWhetter, 2015-11-06 20:36:43]

Description was changed from

==========
Now that python 2.7 is on all of the bots (see http://crbug.com/241769) there
shouldn't be a need to keep using the custom implementation of OrderedDict that
was added to maintain compatibility with older versions of python.
Therefore this change removes the custom implementation and replaces it with
collections.OrderedDict.
==========

to

==========
Replaced custom OrderedDict with collections.OrderedDict

Now that python 2.7 is on all of the bots (see http://crbug.com/241769) there
shouldn't be a need to keep using the custom implementation of OrderedDict that
was added to maintain compatibility with older versions of python.
Therefore this change removes the custom implementation and replaces it with
collections.OrderedDict.
==========

[methane, 2017-04-06 10:01:49]

songofacandy@gmail.com changed reviewers:
+ songofacandy@gmail.com

[methane, 2017-04-06 10:01:50]

lgtm