Add support for autofilling radio buttons and checkboxes.

chrome/browser/autofill/autofill_scanner.cc

Index: chrome/browser/autofill/autofill_scanner.cc
diff --git a/chrome/browser/autofill/autofill_scanner.cc b/chrome/browser/autofill/autofill_scanner.cc
index 41aadc894f85a2dcaf3f99525f7e0c5fa9d30006..ae217572f99af187f3c66b18ef1a4951a37d3cb8 100644
--- a/chrome/browser/autofill/autofill_scanner.cc
+++ b/chrome/browser/autofill/autofill_scanner.cc
@@ -19,11 +19,12 @@ AutofillScanner::~AutofillScanner() {
 }
 
 void AutofillScanner::Advance() {
+  SkipClickables();
   DCHECK(!IsEnd());
   ++cursor_;
 }
 
-const AutofillField* AutofillScanner::Cursor() const {
+const AutofillField* AutofillScanner::Cursor() {
   if (IsEnd()) {
     NOTREACHED();
     return NULL;
@@ -32,7 +33,8 @@ const AutofillField* AutofillScanner::Cursor() const {
   return *cursor_;
 }
 
-bool AutofillScanner::IsEnd() const {
+bool AutofillScanner::IsEnd() {
+  SkipClickables();
   return cursor_ == end_;
 }
 
@@ -52,3 +54,8 @@ size_t AutofillScanner::SaveCursor() {
   saved_cursor_ = cursor_;
   return static_cast<size_t>(cursor_ - begin_);
 }
+
+void AutofillScanner::SkipClickables() {
+  while (cursor_ != end_ && (*cursor_)->is_checkable)
+    ++cursor_;
+}