Apply several phases only to entrypoint files (which currently are identified as

pkg/polymer/lib/src/transform/import_inliner.dart

Index: pkg/polymer/lib/src/transform/import_inliner.dart
diff --git a/pkg/polymer/lib/src/transform/import_inliner.dart b/pkg/polymer/lib/src/transform/import_inliner.dart
index 1f8fbf280e9ecd1bd68c176f0885458616ec4910..081c2ce3ab61f0590bedd607d568a032ed2712b6 100644
--- a/pkg/polymer/lib/src/transform/import_inliner.dart
+++ b/pkg/polymer/lib/src/transform/import_inliner.dart
@@ -17,8 +17,8 @@ import 'common.dart';
 // TODO(sigmund): make sure we match semantics of html-imports for tags other
 // than polymer-element (see dartbug.com/12613).
 class ImportedElementInliner extends Transformer {
-  /** Only run this transformer on .html files. */
-  final String allowedExtensions = ".html";
+  /** Only run on entrypoint .html files under web or test. */

[Jennifer Messerly, 2013/09/04 02:35:04]

nit: space between entry and point

[Siggi Cherem (dart-lang), 2013/09/04 16:30:16]

Done.

+  Future<bool> isPrimary(Asset input) => isHtmlInWebOrTest(input.id);
 
   Future apply(Transform transform) {
     var seen = new Set<AssetId>();
@@ -26,7 +26,8 @@ class ImportedElementInliner extends Transformer {
     var id = transform.primaryInput.id;
     seen.add(id);
     return transform.primaryInput.readAsString().then((content) {
-      var document = parseHtml(content, id.path, transform.logger);
+      var document = parseHtml(content, id.path, transform.logger,
+        checkDocType: true);
       var future = _visitImports(document, id, transform, seen, elements);
       return future.then((importsFound) {
         if (!importsFound) {
@@ -83,8 +84,7 @@ class ImportedElementInliner extends Transformer {
   Future _collectPolymerElements(AssetId id, Transform transform,
       Set<AssetId> seen, List elements) {
     return transform.readInputAsString(id).then((content) {
-      var document = parseHtml(
-          content, id.path, transform.logger, checkDocType: false);
+      var document = parseHtml(content, id.path, transform.logger);

[Jennifer Messerly, 2013/09/04 02:35:04]

it's not a big deal but i'm not sure about flipping this default. In my mind,
entry point HTML documents are the classic, normal ones; imported HTML documents
are the new fancy ones :)

[Siggi Cherem (dart-lang), 2013/09/04 16:30:16]

:) - good point, I flipped it back.

       return _visitImports(document, id, transform, seen, elements).then((_) {
         var normalizer = new _UrlNormalizer(transform, id);
         for (var element in document.queryAll('polymer-element')) {