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 4a626342651d7006c7f5ae5b96a0a989e6b411cb..f0f43f038e94a6d4dc1757ba57faa6eca263f6bd 100644
--- a/chrome/browser/autofill/autofill_manager.cc
+++ b/chrome/browser/autofill/autofill_manager.cc
@@ -654,6 +654,15 @@ 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 if (cached_field->type() == FIELD_WITH_DEFAULT_VALUE &&
+               cached_field->is_checkable) {
+      string16 default_value = UTF8ToUTF16(cached_field->default_value());
+      // Mark the field checked if server says the default value of the field
+      // to be this field's value.
+      result.fields[i].is_checked = (default_value == result.fields[i].value);
+      // 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;
     }
   }