Revert "Use single InputPackagesResultProvider, without SdkSummaryResultProvider."

pkg/analyzer/lib/src/dart/analysis/driver.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.
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:typed_data';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart' show CompilationUnitElement;
@@ skipping 739 matching lines @@
           new LibrarySpecificUnit(libraryFile.source, file.source),
           COMPILATION_UNIT_ELEMENT);
     } finally {
       analysisContext.dispose();
     }
   }
 
   AnalysisContext _createAnalysisContext(_LibraryContext libraryContext) {
     AnalysisContextImpl analysisContext =
         AnalysisEngine.instance.createAnalysisContext();
-    analysisContext.useSdkCachePartition = false;
     analysisContext.analysisOptions = _analysisOptions;
     analysisContext.sourceFactory = _sourceFactory.clone();
     analysisContext.contentCache = new _ContentCacheWrapper(_fsState);
     analysisContext.resultProvider =
         new InputPackagesResultProvider(analysisContext, libraryContext.store);
     return analysisContext;
   }
 
   /**
    * Return the context in which the [library] should be analyzed it.
@@ skipping 919 matching lines @@
           libraryDeclarations.add(new TopLevelDeclarationInSource(
               file.source, declaration, isExported));
         }
       }
     }
 
     // We're not done yet.
     return false;
   }
 }