Add support for autofilling radio buttons and checkboxes.

chrome/browser/autofill/autofill_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/autofill/autofill_manager.h"
 
 #include <stddef.h>
 
 #include <limits>
 #include <map>
@@ skipping 636 matching lines @@
       if (result.fields[i] == field ||
           field_group_type == initiating_group_type) {
         use_variant = variant;
       }
       form_group->FillFormField(*cached_field,
                                 use_variant,
                                 &result.fields[i]);
       // 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) {
+      // For a form with radio buttons, like:
+      // <form>
+      //   <input type="radio" name="sex" value="male">Male<br>
+      //   <input type="radio" name="sex" value="female">Female
+      // </form>
+      // If the default value specified at the server is "female", then
+      // Autofill server responds back with following field mappings
+      //   (fieldtype: FIELD_WITH_DEFAULT_VALUE, value: "female")
+      //   (fieldtype: FIELD_WITH_DEFAULT_VALUE, value: "female")
+      // Note that, the field mapping is repeated twice to respond to both the
+      // input elements with the same name/signature in the form.
+      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;
     }
   }
 
   autofilled_form_signatures_.push_front(form_structure->FormSignature());
   // Only remember the last few forms that we've seen, both to avoid false
   // positives and to avoid wasting memory.
   if (autofilled_form_signatures_.size() > kMaxRecentFormSignaturesToRemember)
     autofilled_form_signatures_.pop_back();
 
   host->Send(new AutofillMsg_FormDataFilled(
@@ skipping 671 matching lines @@
   *profile_guid = IDToGUID(profile_id);
 }
 
 void AutofillManager::UpdateInitialInteractionTimestamp(
     const TimeTicks& interaction_timestamp) {
   if (initial_interaction_timestamp_.is_null() ||
       interaction_timestamp < initial_interaction_timestamp_) {
     initial_interaction_timestamp_ = interaction_timestamp;
   }
 }