Hashcodes were being improperly calculated for public API of libraries.

compiler/java/com/google/dart/compiler/ast/DartUnit.java

Index: compiler/java/com/google/dart/compiler/ast/DartUnit.java
diff --git a/compiler/java/com/google/dart/compiler/ast/DartUnit.java b/compiler/java/com/google/dart/compiler/ast/DartUnit.java
index f621a8918bf93c95670d8152e9aada00bdfcf09c..faa2982e1fc27c93ce67e78a998c68341718df51 100644
--- a/compiler/java/com/google/dart/compiler/ast/DartUnit.java
+++ b/compiler/java/com/google/dart/compiler/ast/DartUnit.java
@@ -127,7 +127,7 @@ public class DartUnit extends DartNode {
   public final String toDietSource() {
     if (dietParse == null) {
       DefaultTextOutput out = new DefaultTextOutput(false);
-      new DartToSourceVisitor(out, true).accept(this);
+      new DartToSourceVisitor(out, true, true).accept(this);
       dietParse = out.toString();
     }
     return dietParse;