Support for constructor references in constant serializer and prelinker.

pkg/analyzer/lib/src/summary/format.dart

Index: pkg/analyzer/lib/src/summary/format.dart
diff --git a/pkg/analyzer/lib/src/summary/format.dart b/pkg/analyzer/lib/src/summary/format.dart
index 9087c1fb633c89eaa455ad2ebe6f0607390eddbc..af18616372f939ce04d7d31e7af34e9033e7dfdd 100644
--- a/pkg/analyzer/lib/src/summary/format.dart
+++ b/pkg/analyzer/lib/src/summary/format.dart
@@ -164,9 +164,8 @@ enum UnlinkedConstOperation {
    * values to create named arguments.  Then pop the top `m` values from the
    * stack (where `m` is obtained from [UnlinkedConst.ints]) into a list (filled
    * from the end) and use them as positional arguments.  Use the lists of
-   * positional and names arguments to invoke a constant constructor whose name
-   * is obtained from [UnlinkedConst.strings], and whose class is obtained from
-   * [UnlinkedConst.references], and push the resulting value back onto the
+   * positional and names arguments to invoke a constant constructor obtained
+   * from [UnlinkedConst.references], and push the resulting value back onto the
    * stack.
    *
    * Note that for an invocation of the form `const a.b(...)` (where no type