Add typedef support to summary linker.

pkg/analyzer/test/src/summary/linker_test.dart

Index: pkg/analyzer/test/src/summary/linker_test.dart
diff --git a/pkg/analyzer/test/src/summary/linker_test.dart b/pkg/analyzer/test/src/summary/linker_test.dart
index ef33f950ea6c1669ba092fcb3f82db9a4ce566b1..becb90d96d70c49d89dade76ec61d60debd64cd1 100644
--- a/pkg/analyzer/test/src/summary/linker_test.dart
+++ b/pkg/analyzer/test/src/summary/linker_test.dart
@@ -587,14 +587,14 @@ class D extends C {
   void test_parameterParentElementForLink_innermostExecutable() {
     createLinker('void f(void g(void h())) {}');
     TopLevelFunctionElementForLink f = testLibrary.getContainedName('f');
-    expect(f.innermostExecutable, same(f));
+    expect(f.typeParameterContext, same(f));
     ParameterElementForLink g = f.parameters[0];
     FunctionType gType = g.type;
     FunctionElementForLink_FunctionTypedParam gTypeElement = gType.element;
-    expect(gTypeElement.innermostExecutable, same(f));
+    expect(gTypeElement.typeParameterContext, same(f));
     ParameterElementForLink h = gTypeElement.parameters[0];
     FunctionType hType = h.type;
     FunctionElementForLink_FunctionTypedParam hTypeElement = hType.element;
-    expect(hTypeElement.innermostExecutable, same(f));
+    expect(hTypeElement.typeParameterContext, same(f));
   }
 }