Update all Angular libs (run update_all.sh).

third_party/pkg/angular/lib/tools/transformer/html_dart_references_generator.dart

Index: third_party/pkg/angular/lib/tools/transformer/html_dart_references_generator.dart
diff --git a/third_party/pkg/angular/lib/tools/transformer/html_dart_references_generator.dart b/third_party/pkg/angular/lib/tools/transformer/html_dart_references_generator.dart
new file mode 100644
index 0000000000000000000000000000000000000000..7af2696169aaef1a8eeff778f9ac4f939de4c340
--- /dev/null
+++ b/third_party/pkg/angular/lib/tools/transformer/html_dart_references_generator.dart
@@ -0,0 +1,50 @@
+library angular.tools.transformer.html_dart_references_generator;
+
+import 'dart:async';
+import 'package:angular/tools/transformer/options.dart';
+import 'package:barback/barback.dart';
+import 'package:code_transformers/assets.dart';
+import 'package:html5lib/parser.dart' as html5;
+
+/// Helper which allows subsequent transformers to know what HTML files are
+/// referencing a Dart file.
+///
+/// Currently this only allows a single HTML file to be referencing a Dart file.
+class HtmlDartReferencesGenerator extends Transformer {
+  final TransformOptions options;
+
+  HtmlDartReferencesGenerator(this.options);
+
+  // Accept all HTML files.
+  String get allowedExtensions => '.html';
+
+  Future apply(Transform transform) {
+    var logger = transform.logger;
+    var asset = transform.primaryInput;
+    transform.addOutput(asset);
+
+    return asset.readAsString().then((contents) {
+      var document = html5.parse(contents);
+      for (var tag in document.querySelectorAll('script')) {
+        if (tag.attributes['type'] != 'application/dart') continue;
+
+        var src = tag.attributes['src'];
+        if (src == null) continue;
+
+        var dartAssetId = uriToAssetId(asset.id, src, logger, tag.sourceSpan);
+        if (dartAssetId == null) continue;
+
+        var htmlRefId = new AssetId(dartAssetId.package,
+              dartAssetId.path + '.html_reference');
+
+        return transform.readInputAsString(htmlRefId).then((contents) {
+          logger.error('Expected $dartAssetId to be referenced by a single '
+              'HTML file, was referenced by $contents and ${asset.id}.');
+        }, onError: (e) {
+          transform.addOutput(
+              new Asset.fromString(htmlRefId, asset.id.path));
+        });
+      }
+    });
+  }
+}