Use dropdown list for admin areas in pr form.

chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
index 7f0f63db0c8742eaadca5814a47eae45fbf82941..198218f4f9221d1370d2ecf26bba7f9317b178ac 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/autofill/AutofillProfileBridge.java
@@ -97,10 +97,31 @@ public class AutofillProfileBridge {
                 return result;
             }
         });
-
         return countries;
     }
 
+    /** @return The list of admin areas sorted by their localized display names. */
+    public static List<DropdownKeyValue> getAdminAreaDropdownList(String[] keys) {
+        List<DropdownKeyValue> adminAreas = new ArrayList<>();
+
+        for (String s : keys) {
+            adminAreas.add(
+                    new DropdownKeyValue(s, s)); // TODO (@crbug.com/691643): show names, save keys.
+        }
+
+        final Collator collator = Collator.getInstance(Locale.getDefault());
+        collator.setStrength(Collator.PRIMARY);
+        Collections.sort(adminAreas, new Comparator<DropdownKeyValue>() {
+            @Override
+            public int compare(DropdownKeyValue lhs, DropdownKeyValue rhs) {
+                int result = collator.compare(lhs.getValue(), rhs.getValue());
+                if (result == 0) result = lhs.getKey().compareTo(rhs.getKey());
+                return result;
+            }
+        });
+        return adminAreas;
+    }
+
     /** @return The list of required fields. COUNTRY is always included. RECIPIENT often omitted. */
     public static List<Integer> getRequiredAddressFields(String countryCode) {
         List<Integer> requiredFields = new ArrayList<>();