[cleanup] remove PropertyName from js_ast

Remove PropertyName from js_ast

This was added to our version, while still figuring out js_ast. As it is now, Printer handles property names quite well on its own, so the extra AST node doesn't add anything.

R=vsm@google.com

Committed: https://github.com/dart-lang/dev_compiler/commit/1bd6154e46823780f7297534c8b35015e7e6bc85

[Jennifer Messerly, 2015-03-25 18:25:06]

jmesserly@google.com changed reviewers:
+ vsm@google.com

[Jennifer Messerly, 2015-03-25 18:26:42]

Just a small cleanup. I'm working on other changes related to names/temps but
this seemed pretty easy to land on its own.

[vsm, 2015-03-25 19:44:28]

lgtm

https://codereview.chromium.org/1030243002/diff/1/lib/src/codegen/js_codegen....
File lib/src/codegen/js_codegen.dart (right):

https://codereview.chromium.org/1030243002/diff/1/lib/src/codegen/js_codegen....
lib/src/codegen/js_codegen.dart:341: js.string(name, "'"),
Did you mean to use _propertyName here?

[Jennifer Messerly, 2015-03-25 20:28:52]

Thanks!

https://codereview.chromium.org/1030243002/diff/1/lib/src/codegen/js_codegen....
File lib/src/codegen/js_codegen.dart (right):

https://codereview.chromium.org/1030243002/diff/1/lib/src/codegen/js_codegen....
lib/src/codegen/js_codegen.dart:341: js.string(name, "'"),
On 2015/03/25 19:44:27, vsm wrote:
> Did you mean to use _propertyName here?

Done.

[Jennifer Messerly, 2015-03-25 20:28:59]

Committed patchset #2 (id:20001) manually as
1bd6154e46823780f7297534c8b35015e7e6bc85 (presubmit successful).