Add summary support for ConstructorElement.nameEnd and .periodOffset.

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

Index: pkg/analyzer/test/src/summary/summary_common.dart
diff --git a/pkg/analyzer/test/src/summary/summary_common.dart b/pkg/analyzer/test/src/summary/summary_common.dart
index 047e07b5b65fc490cfeaf86945293cfc0346c928..8b53487b6ba1e458ee4a5a714ba0392ba02cc591 100644
--- a/pkg/analyzer/test/src/summary/summary_common.dart
+++ b/pkg/analyzer/test/src/summary/summary_common.dart
@@ -3003,6 +3003,8 @@ const v = p.C.foo;
     expect(executable.returnType, isNull);
     expect(executable.isExternal, isFalse);
     expect(executable.nameOffset, text.indexOf('C();'));
+    expect(executable.periodOffset, 0);
+    expect(executable.nameEnd, 0);
     expect(executable.isRedirectedConstructor, isFalse);
     expect(executable.redirectedConstructor, isNull);
     expect(executable.redirectedConstructorName, isEmpty);
@@ -3404,6 +3406,8 @@ class C {
         executables: serializeClassText(text).executables);
     expect(executable.name, 'foo');
     expect(executable.nameOffset, text.indexOf('foo'));
+    expect(executable.periodOffset, text.indexOf('.foo'));
+    expect(executable.nameEnd, text.indexOf('()'));
   }
 
   test_constructor_non_const() {