fix imports link rel=stylesheet

pkg/polymer/lib/src/build/common.dart

Index: pkg/polymer/lib/src/build/common.dart
diff --git a/pkg/polymer/lib/src/build/common.dart b/pkg/polymer/lib/src/build/common.dart
index 7e62cc7adb575dde51b6aa40ddb53e58cb898176..e6b28e2322783e33486bb1bfc0d0a8acf8535edd 100644
--- a/pkg/polymer/lib/src/build/common.dart
+++ b/pkg/polymer/lib/src/build/common.dart
@@ -112,6 +112,13 @@ abstract class PolymerTransformer {
     });
   }
 
+  String getAssetUrl(AssetId id, Transform transform) {

[Siggi Cherem (dart-lang), 2014/02/13 17:46:33]

I find it a bit confusing to have both getAssetUrl and assetUrlFor.

How about renaming this to something else. Some ideas:
 - spanUrlFor
 - getUrlForErrorMessages
 - packageAbsoluteUrlFor

Let's also add a small dartdoc for it.

[Jennifer Messerly, 2014/02/13 20:43:47]

done! based Dartdoc on your extremely helpful explanation! :)

+    var primaryId = transform.primaryInput.id;
+    bool samePackage = id.package == primaryId.package;
+    return samePackage ? id.path
+        : assetUrlFor(id, primaryId, transform.logger, allowAssetUrl: true);
+  }
+
   Future<bool> assetExists(AssetId id, Transform transform) =>
       transform.getInput(id).then((_) => true).catchError((_) => false);
 
@@ -129,7 +136,8 @@ List<List<Transformer>> get phasesForPolymer =>
  * urls are not resolved unless [source] is Dart file (has a .dart extension).
  */
 // TODO(sigmund): delete once this is part of barback (dartbug.com/12610)
-AssetId resolve(AssetId source, String url, TransformLogger logger, Span span) {
+AssetId resolve(AssetId source, String url, TransformLogger logger, Span span,
+    {bool allowAbsolute: false}) {
   if (url == null || url == '') return null;
   var uri = Uri.parse(url);
   var urlBuilder = path.url;
@@ -142,7 +150,9 @@ AssetId resolve(AssetId source, String url, TransformLogger logger, Span span) {
       }
     }
 
-    logger.error('absolute paths not allowed: "$url"', span: span);
+    if (!allowAbsolute) {
+      logger.error('absolute paths not allowed: "$url"', span: span);
+    }
     return null;
   }