deprecate deletedSource and deletedSources in ChangeSet

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

Index: pkg/analyzer/lib/src/generated/engine.dart
diff --git a/pkg/analyzer/lib/src/generated/engine.dart b/pkg/analyzer/lib/src/generated/engine.dart
index b01c4ef1fabbc5aef741487abcf28a3454311850..b27c42e927430d138f919ebf01c0b0d60f4ddfb9 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -1590,6 +1590,7 @@ class ChangeSet {
   /**
    * A list containing the sources that have been deleted.
    */
+  @deprecated
   final List<Source> deletedSources = new List<Source>();
 
   /**
@@ -1652,6 +1653,7 @@ class ChangeSet {
   /**
    * Record that the specified [source] has been deleted.
    */
+  @deprecated
   void deletedSource(Source source) {
     deletedSources.add(source);
   }