Remove ShadowVariableDeclaration.isSemiSafe.

Remove ShadowVariableDeclaration.isSemiSafe.

This only existed as a temporary measure while we were discussing how
to modify the kernel format.  It has been replaced by
VariableDeclaration.formalSafety.

R=scheglov@google.com

Committed: https://github.com/dart-lang/sdk/commit/b8e5e03ff4aff67c2221d576781c896290ae9d8e

[Paul Berry, 2017-08-30 21:00:41]

Description was changed from

==========
Remove ShadowVariableDeclaration.isSemiSafe.

This only existed as a temporary measure while we were discussion how
to modify the kernel format.  It has been replaced by
VariableDeclaration.formalSafety.
==========

to

==========
Remove ShadowVariableDeclaration.isSemiSafe.

This only existed as a temporary measure while we were discussing how
to modify the kernel format.  It has been replaced by
VariableDeclaration.formalSafety.
==========

[Paul Berry, 2017-08-30 21:01:09]

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

[Paul Berry, 2017-08-30 21:01:10]

I only need a review from one of you.

[scheglov, 2017-08-30 21:04:53]

LGTM

[Paul Berry, 2017-08-30 21:38:34]

Description was changed from

==========
Remove ShadowVariableDeclaration.isSemiSafe.

This only existed as a temporary measure while we were discussing how
to modify the kernel format.  It has been replaced by
VariableDeclaration.formalSafety.
==========

to

==========
Remove ShadowVariableDeclaration.isSemiSafe.

This only existed as a temporary measure while we were discussing how
to modify the kernel format.  It has been replaced by
VariableDeclaration.formalSafety.

R=scheglov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/b8e5e03ff4aff67c2221d576781c896290ae9d8e
==========

[Paul Berry, 2017-08-30 21:38:35]

Committed patchset #1 (id:1) manually as
b8e5e03ff4aff67c2221d576781c896290ae9d8e (presubmit successful).