Revert "Removed Dartium SDK libs"

pkg/analyzer/lib/src/summary/summary_file_builder.dart

 // Copyright (c) 2016, 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.
 
 library analyzer.src.summary.summary_file_builder;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 34 matching lines @@
     FolderBasedDartSdk sdk = new FolderBasedDartSdk(
         resourceProvider, resourceProvider.getFolder(sdkPath), strong);
     sdk.useSummary = false;
     sdk.analysisOptions = new AnalysisOptionsImpl()..strongMode = strong;
 
     //
     // Prepare 'dart:' URIs to serialize.
     //
     Set<String> uriSet =
         sdk.sdkLibraries.map((SdkLibrary library) => library.shortName).toSet();
+    if (!strong) {
+      uriSet.add('dart:html/nativewrappers.dart');
+    }
     uriSet.add('dart:html_common/html_common_dart2js.dart');
 
     Set<Source> librarySources = new HashSet<Source>();
     for (String uri in uriSet) {
       librarySources.add(sdk.mapDartUri(uri));
     }
 
     return new SummaryBuilder(librarySources, sdk.context, strong);
   }
 
@@ skipping 73 matching lines @@
     scanner.scanGenericMethodComments = strong;
     Token token = scanner.tokenize();
     LineInfo lineInfo = new LineInfo(scanner.lineStarts);
     Parser parser = new Parser(source, errorListener);
     parser.parseGenericMethodComments = strong;
     CompilationUnit unit = parser.parseCompilationUnit(token);
     unit.lineInfo = lineInfo;
     return unit;
   }
 }