Add supports that allow Autofill to be initiated from textarea field

components/autofill/content/renderer/form_cache.cc

Index: components/autofill/content/renderer/form_cache.cc
diff --git a/components/autofill/content/renderer/form_cache.cc b/components/autofill/content/renderer/form_cache.cc
index 431979ebd4c8a6875473e974780ec7bdee3e7ce0..d9acf3755296bea33d9b8c2b8b90745c0bf3f146 100644
--- a/components/autofill/content/renderer/form_cache.cc
+++ b/components/autofill/content/renderer/form_cache.cc
@@ -179,7 +179,7 @@ void FormCache::ResetFrame(const WebFrame& frame) {
   RemoveOldElements(frame, &initial_checked_state_);
 }
 
-bool FormCache::ClearFormWithElement(const WebInputElement& element) {
+bool FormCache::ClearFormWithElement(const WebFormControlElement& element) {
   WebFormElement form_element = element.form();
   if (form_element.isNull())
     return false;