Use unitMember/classMember/parameter names instead of offsets in index.

Use unitMember/classMember/parameter names instead of offsets in index.

This fixes index for cases when element offset might change without
causing resolution of its users, e.g. incremental changes (like
inserting a whitespace) and incremental invalidation.

R=brianwilkerson@google.com
BUG=

Committed: https://github.com/dart-lang/sdk/commit/77590f5ab1c085b68c16e59cad187acde19a1491

[Brian Wilkerson, 2016-08-02 21:51:47]

One of the advantages of the old implementation was that we could handle errors
such as having the same name defined in two places in a file, but I suppose this
is probably better. lgtm.

[scheglov, 2016-08-03 06:18:34]

Description was changed from

==========
Use unitMember/classMember/parameter names instead of offsets in index.

This fixes index for cases when element offset might change without
causing resolution of its users, e.g. incremental changes (like
inserting a whitespace) and incremental invalidation.

R=brianwilkerson@google.com
BUG=
==========

to

==========
Use unitMember/classMember/parameter names instead of offsets in index.

This fixes index for cases when element offset might change without
causing resolution of its users, e.g. incremental changes (like
inserting a whitespace) and incremental invalidation.

R=brianwilkerson@google.com
BUG=

Committed:
https://github.com/dart-lang/sdk/commit/77590f5ab1c085b68c16e59cad187acde19a1491
==========

[scheglov, 2016-08-03 06:18:35]

Committed patchset #1 (id:1) manually as
77590f5ab1c085b68c16e59cad187acde19a1491 (presubmit successful).