Issue 29109. Resynthesize PrefixElement(s) to fix constants evaluation.

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

Index: pkg/analyzer/test/src/summary/element_text.dart
diff --git a/pkg/analyzer/test/src/summary/element_text.dart b/pkg/analyzer/test/src/summary/element_text.dart
index f0767f1c9708467ed51b78aef80f2f26859fdf69..ef183f4b0de6faf8663465de44adff1993ebb61f 100644
--- a/pkg/analyzer/test/src/summary/element_text.dart
+++ b/pkg/analyzer/test/src/summary/element_text.dart
@@ -807,8 +807,10 @@ class _ElementWriter {
 
     ElementLocation location = element.location;
     List<String> components = location.components.toList();
-    if (components.length > 2) {
+    if (components.length > 1) {

[Brian Wilkerson, 2017/04/11 18:16:35]

Shouldn't this be ">= 1"? (and similarly on line 813) It probably never matters
because we're probably never passing in a LibraryElement, but...

[scheglov, 2017/04/11 18:27:13]

Yes, I think you're right, it's cleaner to check for only what we really use.
Fixed.

       components[0] = onlyName(components[0]);
+    }
+    if (components.length > 2) {
       components[1] = onlyName(components[1]);
       if (components[0] == components[1]) {
         components.removeAt(0);