Use WebInputElement.isCheckbox() and isRadioButton() API being exposed by https://bugs.webkit.org/s…

chrome/renderer/autofill/form_autofill_util.cc

Index: chrome/renderer/autofill/form_autofill_util.cc
diff --git a/chrome/renderer/autofill/form_autofill_util.cc b/chrome/renderer/autofill/form_autofill_util.cc
index 9b5cd05aac90560a9732959c0777e0d44bbf2e44..c04954160f8158845c0ee5992fff897e5dd7d9b8 100644
--- a/chrome/renderer/autofill/form_autofill_util.cc
+++ b/chrome/renderer/autofill/form_autofill_util.cc
@@ -574,21 +574,14 @@ bool IsSelectElement(const WebFormControlElement& element) {
 }
 
 bool IsCheckableElement(const WebInputElement* element) {
-  // Is static for improving performance.
-  CR_DEFINE_STATIC_LOCAL(WebString, kRadio, ("radio"));
-  CR_DEFINE_STATIC_LOCAL(WebString, kCheckbox, ("checkbox"));
-
   if (!element)
     return false;
 
-  WebString formControlType = element->formControlType();
-  return formControlType == kCheckbox || formControlType == kRadio;
+  return element->isCheckbox() || element->isRadioButton();
 }
 
 bool IsAutofillableInputElement(const WebInputElement* element) {
-  // TODO(ramankk): Uncomment IsCheckableElement part once we have solution
-  // for the observed performance regression.
-  return IsTextInput(element); // || IsCheckableElement(element);
+  return IsTextInput(element) || IsCheckableElement(element);
 }
 
 const string16 GetFormIdentifier(const WebFormElement& form) {