New analyzer snapshot.

pkg/analyzer/lib/src/generated/source.dart

Index: pkg/analyzer/lib/src/generated/source.dart
diff --git a/pkg/analyzer/lib/src/generated/source.dart b/pkg/analyzer/lib/src/generated/source.dart
index 3e41f46a0afb2391ea6fb47b7b4f51beca808b58..3022961a5440724cb999d338fd3079fd1b459c1f 100644
--- a/pkg/analyzer/lib/src/generated/source.dart
+++ b/pkg/analyzer/lib/src/generated/source.dart
@@ -7,6 +7,7 @@
 
 library engine.source;
 
+import 'dart:collection';
 import 'java_core.dart';
 import 'sdk.dart' show DartSdk;
 import 'engine.dart' show AnalysisContext, TimestampedData;
@@ -20,13 +21,13 @@ class ContentCache {
    * A table mapping sources to the contents of those sources. This is used to override the default
    * contents of a source.
    */
-  Map<Source, String> _contentMap = new Map<Source, String>();
+  HashMap<Source, String> _contentMap = new HashMap<Source, String>();
 
   /**
    * A table mapping sources to the modification stamps of those sources. This is used when the
    * default contents of a source has been overridden.
    */
-  Map<Source, int> _stampMap = new Map<Source, int>();
+  HashMap<Source, int> _stampMap = new HashMap<Source, int>();
 
   /**
    * Return the contents of the given source, or `null` if this cache does not override the