Add support for autofilling radio buttons and checkboxes.

chrome/browser/autofill/autofill_manager.cc

Index: chrome/browser/autofill/autofill_manager.cc
diff --git a/chrome/browser/autofill/autofill_manager.cc b/chrome/browser/autofill/autofill_manager.cc
index aeeca26fbfef722c4a49830608ededf7de46c05d..a7218522ad0662eff7799dabc88b58c73f128d6a 100644
--- a/chrome/browser/autofill/autofill_manager.cc
+++ b/chrome/browser/autofill/autofill_manager.cc
@@ -648,6 +648,14 @@ void AutofillManager::OnFillAutofillFormData(int query_id,
       // Mark the cached field as autofilled, so that we can detect when a user
       // edits an autofilled field (for metrics).
       form_structure->field(i)->is_autofilled = true;
+    } else {
+      // Check if the field type is one with default value.
+      if (cached_field->type() == FIELD_WITH_DEFAULT_VALUE &&
+          cached_field->is_checkable) {
+        string16 default_value = ASCIIToUTF16(cached_field->default_value());
+        result.fields[i].is_checked = (default_value == result.fields[i].value);
+        form_structure->field(i)->is_autofilled = true;
+      }
     }
   }