Remove unused import in polymer, fix comment.

Remove unused import in polymer, fix comment.

R=jmesserly@google.com

Committed: https://code.google.com/p/dart/source/detail?r=35865

[Siggi Cherem (dart-lang), 2014-05-07 17:24:38]

https://codereview.chromium.org/270693005/diff/1/pkg/polymer/lib/src/instance...
File pkg/polymer/lib/src/instance.dart (left):

https://codereview.chromium.org/270693005/diff/1/pkg/polymer/lib/src/instance...
pkg/polymer/lib/src/instance.dart:629: /// Bind a [property] in this object to a
[path] in model. *Note* in Dart it
this [path] was marking the import as 'used', so the analyzer didn't report the
warning.

[Jennifer Messerly, 2014-05-07 19:28:53]

https://codereview.chromium.org/270693005/diff/1/pkg/polymer/lib/src/instance...
File pkg/polymer/lib/src/instance.dart (left):

https://codereview.chromium.org/270693005/diff/1/pkg/polymer/lib/src/instance...
pkg/polymer/lib/src/instance.dart:636: ///       bindProperty(#myProperty, this,
'myModel.path.to.otherProp');
I fixed this code snippet in my port without removing it.

All it needs is:

bindProperty(#myProperty,
    new PathObserver(this, 'myModel.path.to.otherProp'));

[Siggi Cherem (dart-lang), 2014-05-07 19:34:48]

thx

https://codereview.chromium.org/270693005/diff/1/pkg/polymer/lib/src/instance...
File pkg/polymer/lib/src/instance.dart (left):

https://codereview.chromium.org/270693005/diff/1/pkg/polymer/lib/src/instance...
pkg/polymer/lib/src/instance.dart:636: ///       bindProperty(#myProperty, this,
'myModel.path.to.otherProp');
On 2014/05/07 19:28:53, John Messerly wrote:
> I fixed this code snippet in my port without removing it.
> 
> All it needs is:
> 
> bindProperty(#myProperty,
>     new PathObserver(this, 'myModel.path.to.otherProp'));

Done

[Jennifer Messerly, 2014-05-07 20:25:17]

lgtm

[Siggi Cherem (dart-lang), 2014-05-07 20:25:55]

Committed patchset #2 manually as r35865 (presubmit successful).