anchor.diff:    @failingTest
     void test_inferTypeOnVarFromTopLevel() {
       super.test_inferTypeOnVarFromTopLevel();
  -  }
  -
  -  @override
  -  @failingTest
  -  void test_inferTypeRegardlessOfDeclarationOrderOrCycles() {
  -    super.test_inferTypeRegardlessOfDeclarationOrderOrCycles();
     }
   
     @override
  
positive.code: 
    @override
    @failingTest
    void test_constructor_withCycles_const() {
      super.test_constructor_withCycles_const();
    }
  
    @override
  
negative.code:         new PackageBundle.fromBuffer(bundleAssembler.assemble().toBuffer());
  
      Map<String, UnlinkedUnit> unlinkedSummaries = <String, UnlinkedUnit>{};
      for (int i = 0; i < bundle.unlinkedUnitUris.length; i++) {
        String uri = bundle.unlinkedUnitUris[i];
        unlinkedSummaries[uri] = bundle.unlinkedUnits[i];
      }
  
      LinkedLibrary getDependency(String absoluteUri) {
        Map<String, LinkedLibrary> sdkLibraries =
            SerializedMockSdk.instance.uriToLinkedLibrary;
        // TODO(scheglov) Add support non-SDK linked libraries.
        LinkedLibrary linkedLibrary = sdkLibraries[absoluteUri];
        if (linkedLibrary == null) {
          fail('Linker unexpectedly requested LinkedLibrary for "$absoluteUri".'
              '  Libraries available: ${sdkLibraries.keys}');
        }
        return linkedLibrary;
      }
      UnlinkedUnit getUnit(String absoluteUri) {
        UnlinkedUnit unit = uriToUnit[absoluteUri] ??
            SerializedMockSdk.instance.uriToUnlinkedUnit[absoluteUri];
        if (unit == null) {
          fail('Linker unexpectedly requested unit for "$absoluteUri".');
        }
        return unit;
      }
      Map<String, LinkedLibrary> linkedSummaries = link(uriToUnit.keys.toSet(),
          getDependency, getUnit, context.analysisOptions.strongMode);
  
      return new TestSummaryResynthesizer(
          null, context, unlinkedSummaries, linkedSummaries);
    }
  
    UnlinkedUnitBuilder _getUnlinkedUnit(Source source) {
      return uriToUnit.putIfAbsent(source.uri.toString(), () {
        CompilationUnit unit = context.computeResult(source, PARSED_UNIT);
        UnlinkedUnitBuilder unlinkedUnit = serializeAstUnlinked(unit);
        bundleAssembler.addUnlinkedUnit(source, unlinkedUnit);
  