Reserve element 0 in the references table for `dynamic`.

Reserve element 0 in the references table for `dynamic`.

In addition to simplifying some serialization/deserialization code, this
paves the way for merging the references table with the prefixes table
by allowing the zeroth entry in both tables to act as a sentinel value.

R=scheglov@google.com

Committed: https://github.com/dart-lang/sdk/commit/ceecfe862b5d5e459f8e1cb757d9e48439641a7a

[Paul Berry, 2015-12-15 19:14:41]

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

[scheglov, 2015-12-15 19:16:48]

LGTM

[Paul Berry, 2015-12-15 19:25:15]

Description was changed from

==========
Reserve element 0 in the references table for `dynamic`.

In addition to simplifying some serialization/deserialization code, this
paves the way for merging the references table with the prefixes table
by allowing the zeroth entry in both tables to act as a sentinel value.
==========

to

==========
Reserve element 0 in the references table for `dynamic`.

In addition to simplifying some serialization/deserialization code, this
paves the way for merging the references table with the prefixes table
by allowing the zeroth entry in both tables to act as a sentinel value.

R=scheglov@google.com

Committed:
https://github.com/dart-lang/sdk/commit/ceecfe862b5d5e459f8e1cb757d9e48439641a7a
==========

[Paul Berry, 2015-12-15 19:25:16]

Committed patchset #1 (id:1) manually as
ceecfe862b5d5e459f8e1cb757d9e48439641a7a (presubmit successful).

[Brian Wilkerson, 2015-12-15 20:22:28]

LGTM