Compute ConstructorElement.returnType/type dynamically.

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

Index: pkg/analyzer/test/src/summary/resynthesize_test.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_test.dart b/pkg/analyzer/test/src/summary/resynthesize_test.dart
index eea778b310185fbb53f1d66ce886671e71a6761e..c83edad5676ba461cebff6387b8ca78c21f79759 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_test.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_test.dart
@@ -3655,7 +3655,7 @@ get g {
     checkLibrary(r'''
 class C {
   C() {
-    aaa: while (true) {}
+    aaa: print(0);

[Paul Berry, 2016/06/03 16:10:17]

I'd really prefer not to mix in a totally unrelated change into this CL.

I have a CL that fixes this test regression here:
https://codereview.chromium.org/2037973003/

[scheglov, 2016/06/03 16:11:57]

OK, reverted.

     bbb: switch (42) {
       ccc: case 0:
         break;
@@ -3669,7 +3669,7 @@ class C {
     checkLibrary(r'''
 class C {
   m() {
-    aaa: while (true) {}
+    aaa: print(0);
     bbb: switch (42) {
       ccc: case 0:
         break;
@@ -3682,7 +3682,7 @@ class C {
   test_localLabels_inTopLevelFunction() {
     checkLibrary(r'''
 main() {
-  aaa: while (true) {}
+  aaa: print(0);
   bbb: switch (42) {
     ccc: case 0:
       break;