Migrate UnlinkedVariable.constExpr to UnlinkedExecutable.bodyExpr.

Migrate UnlinkedVariable.constExpr to UnlinkedExecutable.bodyExpr.

To do AST-based type inference involving function closures, we will
need to be able to store closure body expressions in unlinked
summaries--this requires adding a `bodyExpr` field to
UnlinkedExecutable.  Since every UnlinkedVariable with a body
expression has a corresponding UnlinkedExecutable representing its
initializer, it makes sense to store the constant expression there for
uniformity.

R=scheglov@google.com

Committed: https://github.com/dart-lang/sdk/commit/f1bd126241ffce75fd971610ac68d1a311e646c7

[Paul Berry, 2016-05-25 21:33:18]

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

[scheglov, 2016-05-25 22:01:03]

LGTM

[Paul Berry, 2016-05-25 22:22:53]

Description was changed from

==========
Migrate UnlinkedVariable.constExpr to UnlinkedExecutable.bodyExpr.

To do AST-based type inference involving function closures, we will
need to be able to store closure body expressions in unlinked
summaries--this requires adding a `bodyExpr` field to
UnlinkedExecutable.  Since every UnlinkedVariable with a body
expression has a corresponding UnlinkedExecutable representing its
initializer, it makes sense to store the constant expression there for
uniformity.
==========

to

==========
Migrate UnlinkedVariable.constExpr to UnlinkedExecutable.bodyExpr.

To do AST-based type inference involving function closures, we will
need to be able to store closure body expressions in unlinked
summaries--this requires adding a `bodyExpr` field to
UnlinkedExecutable.  Since every UnlinkedVariable with a body
expression has a corresponding UnlinkedExecutable representing its
initializer, it makes sense to store the constant expression there for
uniformity.

R=scheglov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/f1bd126241ffce75fd971610ac68d1a311e646c7
==========

[Paul Berry, 2016-05-25 22:22:54]

Committed patchset #2 (id:20001) manually as
f1bd126241ffce75fd971610ac68d1a311e646c7 (presubmit successful).