Minor improvements to list representation in flatbuffers.

Minor improvements to list representation in flatbuffers.

This CL makes the following changes:

- Renames _FbInt32List to _FbGenericList, and makes it able to
  represent lists of entities whose size isn't 4.

- Adds Uint32ListReader and _FbUint32List classes, which are
  specialized to handle lists of 32-bit unsigned ints.

- Moves common elements of all _Fb*List classes to the _FbList base
  class.

R=scheglov@google.com

Committed: https://github.com/dart-lang/sdk/commit/71b593f89e295e5684b5d7db76e2b365e97213f1

[Paul Berry, 2016-02-11 19:46:35]

paulberry@google.com changed reviewers:
+ scheglov@google.com

[scheglov, 2016-02-11 20:01:26]

LGTM

[Paul Berry, 2016-02-11 20:14:33]

Description was changed from

==========
Minor improvements to list representation in flatbuffers.

This CL makes the following changes:

- Renames _FbInt32List to _FbGenericList, and makes it able to
  represent lists of entities whose size isn't 4.

- Adds Uint32ListReader and _FbUint32List classes, which are
  specialized to handle lists of 32-bit unsigned ints.

- Moves common elements of all _Fb*List classes to the _FbList base
  class.
==========

to

==========
Minor improvements to list representation in flatbuffers.

This CL makes the following changes:

- Renames _FbInt32List to _FbGenericList, and makes it able to
  represent lists of entities whose size isn't 4.

- Adds Uint32ListReader and _FbUint32List classes, which are
  specialized to handle lists of 32-bit unsigned ints.

- Moves common elements of all _Fb*List classes to the _FbList base
  class.

R=scheglov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/71b593f89e295e5684b5d7db76e2b365e97213f1
==========

[Paul Berry, 2016-02-11 20:14:34]

Committed patchset #2 (id:20001) manually as
71b593f89e295e5684b5d7db76e2b365e97213f1 (presubmit successful).