Store FunctionType(s) of local functions by value.

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..add1eb712804decfa8ca8fc26fbc33a4356ec187 100644
--- a/pkg/analyzer/lib/src/summary/idl.dart
+++ b/pkg/analyzer/lib/src/summary/idl.dart
@@ -834,6 +834,7 @@ abstract class LinkedReference extends base.SummaryClass {
    * [UnlinkedExecutable.localFunctions].  Otherwise zero.
    */
   @Id(6)
+  @deprecated

[Paul Berry, 2017/07/10 18:32:46]

I'm worried that this will cause compatibility issues when rolled into the
Google internal codebase, because code that consumes summaries will get updated
before code that generates summaries.  So there will be a period of time where
some summaries exist that were generated by the old analyzer but need to be
consumed by the new analyzer.  Can we modify this CL to just change how
summaries are generated, and postpone the changes to how summaries are consumed
until later?

   int get localIndex;
 
   /**