update polymer, nodebind, and templatebinding

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

Index: pkg/polymer/lib/src/build/script_compactor.dart
diff --git a/pkg/polymer/lib/src/build/script_compactor.dart b/pkg/polymer/lib/src/build/script_compactor.dart
index d11b6167149d8391c0bae83eb8ed08976b279ead..8b2d1b560f640fb80fd1e4d7446c8ea3d5495a1c 100644
--- a/pkg/polymer/lib/src/build/script_compactor.dart
+++ b/pkg/polymer/lib/src/build/script_compactor.dart
@@ -224,7 +224,7 @@ class _ScriptCompactor extends PolymerTransformer {
   void _extractUsesOfMirrors(_) {
     // Generate getters and setters needed to evaluate polymer expressions, and
     // extract information about published attributes.
-    new _HtmlExtractor(generator, publishedAttributes).visit(document);
+    new _HtmlExtractor(logger, generator, publishedAttributes).visit(document);
 
     // Create a recorder that uses analyzer data to feed data to [generator].
     var recorder = new Recorder(generator,
@@ -483,9 +483,11 @@ class _HtmlExtractor extends TreeVisitor {
   final Map<String, List<String>> publishedAttributes;
   final SmokeCodeGenerator generator;
   final _SubExpressionVisitor visitor;
+  final TransformLogger logger;
   bool _inTemplate = false;
 
-  _HtmlExtractor(SmokeCodeGenerator generator, this.publishedAttributes)
+  _HtmlExtractor(this.logger, SmokeCodeGenerator generator,
+      this.publishedAttributes)
       : generator = generator,
         visitor = new _SubExpressionVisitor(generator);
 
@@ -511,7 +513,7 @@ class _HtmlExtractor extends TreeVisitor {
     var bindings = _Mustaches.parse(node.data);
     if (bindings == null) return;
     for (var e in bindings.expressions) {
-      _addExpression(e, false, false);
+      _addExpression(e, false, false, node.sourceSpan);
     }
   }
 
@@ -546,20 +548,24 @@ class _HtmlExtractor extends TreeVisitor {
             tag == 'textarea' && name == 'value');
       }
       for (var exp in bindings.expressions) {
-        _addExpression(exp, isEvent, isTwoWay);
+        _addExpression(exp, isEvent, isTwoWay, node.sourceSpan);
       }
     });
   }
 
-  void _addExpression(String stringExpression, bool inEvent, bool isTwoWay) {
+  void _addExpression(String stringExpression, bool inEvent, bool isTwoWay,
+      SourceSpan span) {
+
     if (inEvent) {
-      if (!stringExpression.startsWith("@")) {
-        if (stringExpression == '') return;
-        generator.addGetter(stringExpression);
-        generator.addSymbol(stringExpression);
+      if (stringExpression.startsWith('@')) {
+        logger.warning('event bindings with @ are no longer supported',
+            span: span);
         return;
       }
-      stringExpression = stringExpression.substring(1);
+
+      if (stringExpression == '') return;
+      generator.addGetter(stringExpression);
+      generator.addSymbol(stringExpression);
     }
     visitor.run(pe.parse(stringExpression), isTwoWay);
   }
@@ -741,7 +747,7 @@ List<ClassElement> _visibleClassesOf(LibraryElement lib) {
 
 /// Retrieves all top-level methods that are visible if you were to import
 /// [lib]. This includes exported methods from other libraries too.
-List<ClassElement> _visibleTopLevelMethodsOf(LibraryElement lib) {
+List<FunctionElement> _visibleTopLevelMethodsOf(LibraryElement lib) {
   var result = [];
   result.addAll(lib.units.expand((u) => u.functions));
   for (var e in lib.exports) {