Allow linked types to refer to local executables.

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 44e9456d08567fdee20695a797e82e51aa5c099e..a220666c4423bcca0f37350b82d29f2b7b089648 100644
--- a/pkg/analyzer/lib/src/summary/idl.dart
+++ b/pkg/analyzer/lib/src/summary/idl.dart
@@ -292,6 +292,16 @@ abstract class LinkedReference extends base.SummaryClass {
   ReferenceKind get kind;
 
   /**
+   * If [kind] is [ReferenceKind.function] (that is, the entity being referred
+   * to is a local function), the index of the function within
+   * [UnlinkedExecutable.localFunctions].  If [kind] is
+   * [ReferenceKind.variable], the index of the variable within
+   * [UnlinkedExecutable.localVariables].  Otherwise zero.
+   */
+  @Id(6)
+  int get localIndex;
+
+  /**
    * If this [LinkedReference] doesn't have an associated [UnlinkedReference],
    * name of the entity being referred to.  For the pseudo-type `dynamic`, the
    * string is "dynamic".  For the pseudo-type `void`, the string is "void".
@@ -385,6 +395,11 @@ enum ReferenceKind {
   function,
 
   /**
+   * The entity is a local variable.
+   */
+  variable,
+
+  /**
    * The entity is a top level function.
    */
   topLevelFunction,