Put a TypeProvider on the TypeSystem implementations.

Put a TypeProvider on the TypeSystem implementations.

Adding a TypeProvider instance to TypeSystem to avoid needing to
thread it through the various APIs, and to avoid having to change
the API every time a method which previously did not need to
access the TypeSystem suddenly does.

BUG=
R=jmesserly@google.com

Committed: https://github.com/dart-lang/sdk/commit/83fc4b6b4644f78103238e215e9e4cee3a1656cd

[Leaf, 2016-12-20 22:12:44]

leafp@google.com changed reviewers:
+ jmesserly@google.com

[Jennifer Messerly, 2017-01-04 01:51:05]

LGTM!

[Leaf, 2017-01-09 10:40:18]

Description was changed from

==========
Put a TypeProvider on the TypeSystem implementations.

Adding a TypeProvider instance to TypeSystem to avoid needing to
thread it through the various APIs, and to avoid having to change
the API every time a method which previously did not need to
access the TypeSystem suddenly does.

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

to

==========
Put a TypeProvider on the TypeSystem implementations.

Adding a TypeProvider instance to TypeSystem to avoid needing to
thread it through the various APIs, and to avoid having to change
the API every time a method which previously did not need to
access the TypeSystem suddenly does.

BUG=
R=jmesserly@google.com

Committed:
https://github.com/dart-lang/sdk/commit/83fc4b6b4644f78103238e215e9e4cee3a1656cd
==========

[Leaf, 2017-01-09 10:40:20]

Committed patchset #3 (id:40001) manually as
83fc4b6b4644f78103238e215e9e4cee3a1656cd (presubmit successful).