pkg/crypto: fix example

fix example

R=nweiz@google.com

Committed: https://github.com/dart-lang/crypto/commit/baf97b0f0844639637d5afa2b0c90f6f2ae73e80

[kevmoo, 2016-03-23 21:47:27]

kevmoo@google.com changed reviewers:
+ nweiz@google.com

[nweiz, 2016-03-23 22:28:35]

lgtm

https://codereview.chromium.org/1822373003/diff/1/example/hash.dart
File example/hash.dart (right):

https://codereview.chromium.org/1822373003/diff/1/example/hash.dart#newcode10
example/hash.dart:10: const _usage = 'Usage: dart hash.dart <md5|sha1|sha256>
<input_filename>';
This should be final, not const.

[kevmoo, 2016-03-23 22:49:05]

https://codereview.chromium.org/1822373003/diff/1/example/hash.dart
File example/hash.dart (right):

https://codereview.chromium.org/1822373003/diff/1/example/hash.dart#newcode10
example/hash.dart:10: const _usage = 'Usage: dart hash.dart <md5|sha1|sha256>
<input_filename>';
On 2016/03/23 22:28:35, nweiz wrote:
> This should be final, not const.

Done.

[kevmoo, 2016-03-23 22:49:13]

Description was changed from

==========
fix example
==========

to

==========
fix example

R=nweiz@google.com

Committed:
https://github.com/dart-lang/crypto/commit/baf97b0f0844639637d5afa2b0c90f6f2a...
==========

[kevmoo, 2016-03-23 22:49:15]

Committed patchset #2 (id:20001) manually as
baf97b0f0844639637d5afa2b0c90f6f2ae73e80 (presubmit successful).