Deprecate UnlinkedVariable.visibleOffset/Length.

pkg/analyzer/lib/src/summary/idl.dart

Index: pkg/analyzer/lib/src/summary/idl.dart
diff --git a/pkg/analyzer/lib/src/summary/idl.dart b/pkg/analyzer/lib/src/summary/idl.dart
index 776fef17d1375d10e574251e6dce401b3b5a086f..fb92bf179c263f3eda68f9ca9e1f3e232fcda1fe 100644
--- a/pkg/analyzer/lib/src/summary/idl.dart
+++ b/pkg/analyzer/lib/src/summary/idl.dart
@@ -3348,6 +3348,7 @@ abstract class UnlinkedVariable extends base.SummaryClass {
   /**
    * If a local variable, the length of the visible range; zero otherwise.
    */
+  @deprecated
   @informative
   @Id(11)
   int get visibleLength;
@@ -3355,6 +3356,7 @@ abstract class UnlinkedVariable extends base.SummaryClass {
   /**
    * If a local variable, the beginning of the visible range; zero otherwise.
    */
+  @deprecated
   @informative
   @Id(12)
   int get visibleOffset;