Add support for external summaries bundle in AnalysisDriver.

pkg/analyzer/lib/src/dart/analysis/file_tracker.dart

 // Copyright (c) 2017, 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:collection';
 import 'dart:typed_data';
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
 
 /**
  * Callback used by [FileTracker] to report to its client that files have been
  * added, changed, or removed, and therefore more analysis may be necessary.
  */
 typedef void FileTrackerChangeHook();
 
 /**
  * Maintains the file system state needed by the analysis driver, as well as
  * information about files that have changed and the impact of those changes.
@@ skipping 59 matching lines @@
   var _pendingFiles = new LinkedHashSet<String>();
 
   FileTracker(
       this.logger,
       ByteStore byteStore,
       FileContentOverlay contentOverlay,
       ResourceProvider resourceProvider,
       SourceFactory sourceFactory,
       AnalysisOptions analysisOptions,
       Uint32List salt,
+      SummaryDataStore externalSummaries,
       this._changeHook)
       : fsState = new FileSystemState(logger, byteStore, contentOverlay,
-            resourceProvider, sourceFactory, analysisOptions, salt);
+            resourceProvider, sourceFactory, analysisOptions, salt,
+            externalSummaries: externalSummaries);
 
   /**
    * Returns the path to exactly one that needs analysis.  Throws a [StateError]
    * if no files need analysis.
    */
   String get anyPendingFile {
     if (_pendingChangedFiles.isNotEmpty) {
       return _pendingChangedFiles.first;
     }
     if (_pendingImportFiles.isNotEmpty) {
@@ skipping 195 matching lines @@
       // If the file has not been accessed yet, we either will eventually read
       // it later while analyzing one of the added files, or don't need it.
       if (fsState.knownFilePaths.contains(path)) {
         verifyApiSignature(path);
       }
       return true;
     }
     return false;
   }
 }