update to polymer js 0.5.1

pkg/polymer/lib/transformer.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Transfomer used for pub-serve and pub-deploy.
 library polymer.transformer;
 
 import 'package:barback/barback.dart';
 import 'package:observe/transformer.dart';
 import 'package:path/path.dart' as path;
@@ skipping 26 matching lines @@
       : this(_parseSettings(settings));
 }
 
 TransformOptions _parseSettings(BarbackSettings settings) {
   var args = settings.configuration;
   bool releaseMode = settings.mode == BarbackMode.RELEASE;
   bool jsOption = args['js'];
   bool csp = args['csp'] == true; // defaults to false
   bool injectBuildLogs =
       !releaseMode && args['inject_build_logs_in_output'] != false;
-  bool injectPlatformJs = args['inject_platform_js'] != false;
+  bool injectWebComponentsJs = true;
+  if (args['inject_platform_js'] != null) {
+    print(
+        'Deprecated polymer transformer option `inject_platform_js`. This has '
+        'been renamed `inject_web_components_js` to match the new file name.');
+    injectWebComponentsJs = args['inject_platform_js'] != false;
+  }
+  if (args['inject_webcomponents_js'] != null) {
+    injectWebComponentsJs = args['inject_webcomponents_js'] != false;
+  }
   return new TransformOptions(
       entryPoints: readFileList(args['entry_points']),
       inlineStylesheets: _readInlineStylesheets(args['inline_stylesheets']),
       directlyIncludeJS: jsOption == null ? releaseMode : jsOption,
       contentSecurityPolicy: csp,
       releaseMode: releaseMode,
       lint: _parseLintOption(args['lint']),
       injectBuildLogsInOutput: injectBuildLogs,
-      injectPlatformJs: injectPlatformJs);
+      injectWebComponentsJs: injectWebComponentsJs);
 }
 
 // Lint option can be empty (all files), false, true, or a map indicating
 // include/exclude files.
 _parseLintOption(value) {
   var lint = null;
   if (value == null || value == true) return new LintOptions();
   if (value == false) return new LintOptions.disabled();
   if (value is Map && value.length == 1) {
     var key = value.keys.single;
@@ skipping 93 matching lines @@
     [new BuildFilter(options)],
     [new BuildLogCombiner(options)],
   ]);
   if (!options.releaseMode) {
     phases.add([new IndexPageBuilder(options)]);
   }
   return phases;
 }
 
 final RegExp _PACKAGE_PATH_REGEX = new RegExp(r'packages\/([^\/]+)\/(.*)');