Filter out datalist values for textarea field from renderer side.

components/autofill/core/browser/autofill_external_delegate.cc

Index: components/autofill/core/browser/autofill_external_delegate.cc
diff --git a/components/autofill/core/browser/autofill_external_delegate.cc b/components/autofill/core/browser/autofill_external_delegate.cc
index 95cf8a14a1aff8ea0f06f75969d6685ee4919d12..3450039562f66ffca5216f8344c24e25c19946be 100644
--- a/components/autofill/core/browser/autofill_external_delegate.cc
+++ b/components/autofill/core/browser/autofill_external_delegate.cc
@@ -88,8 +88,9 @@ void AutofillExternalDelegate::OnSuggestionsReturned(
 
   // If anything else is added to modify the values after inserting the data
   // list, AutofillPopupControllerImpl::UpdateDataListValues will need to be
-  // updated to match.
-  InsertDataListValues(&values, &labels, &icons, &ids);
+  // updated to match. This is for input element only.
+  if (query_field_.form_control_type != "textarea")
+    InsertDataListValues(&values, &labels, &icons, &ids);

[Ilya Sherman, 2014/04/28 21:23:14]

We should filter out datalist values on the renderer side, not on the browser
side.  We should figure out why it's currently possible for the renderer to
associate datalist values with a textarea, and then fix the code so that it's no
longer possible.

 
   if (values.empty()) {
     // No suggestions, any popup currently showing is obsolete.