Add support for autofilling radio buttons and checkboxes.

chrome/browser/autofill/autofill_scanner.cc

 // Copyright (c) 2011 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_scanner.h"
 
 #include "base/logging.h"
 #include "chrome/browser/autofill/autofill_field.h"
 
 AutofillScanner::AutofillScanner(
     const std::vector<const AutofillField*>& fields)
     : cursor_(fields.begin()),
       saved_cursor_(fields.begin()),
       begin_(fields.begin()),
       end_(fields.end()) {
 }
 
 AutofillScanner::~AutofillScanner() {
 }
 
 void AutofillScanner::Advance() {
+  SkipClickables();
   DCHECK(!IsEnd());
   ++cursor_;
 }
 
-const AutofillField* AutofillScanner::Cursor() const {
+const AutofillField* AutofillScanner::Cursor() {
   if (IsEnd()) {
     NOTREACHED();
     return NULL;
   }
 
   return *cursor_;
 }
 
-bool AutofillScanner::IsEnd() const {
+bool AutofillScanner::IsEnd() {
+  SkipClickables();
   return cursor_ == end_;
 }
 
 void AutofillScanner::Rewind() {
   DCHECK(saved_cursor_ != end_);
   cursor_ = saved_cursor_;
   saved_cursor_ = end_;
 }
 
 void AutofillScanner::RewindTo(size_t index) {
   DCHECK(index < static_cast<size_t>(end_ - begin_));
   cursor_ = begin_ + index;
   saved_cursor_ = end_;
 }
 
 size_t AutofillScanner::SaveCursor() {
   saved_cursor_ = cursor_;
   return static_cast<size_t>(cursor_ - begin_);
 }
+
+void AutofillScanner::SkipClickables() {
+  while (cursor_ != end_ && (*cursor_)->is_checkable)
+    ++cursor_;
+}