Add a flag to ignore autocomplete="off" for Autofill.

components/autofill/core/browser/autofill_manager.cc

Index: components/autofill/core/browser/autofill_manager.cc
diff --git a/components/autofill/core/browser/autofill_manager.cc b/components/autofill/core/browser/autofill_manager.cc
index 48cd5974c206b50c064630dace3cb85731b24497..9e8089dc1d514886be966c408e3f939e1d42914a 100644
--- a/components/autofill/core/browser/autofill_manager.cc
+++ b/components/autofill/core/browser/autofill_manager.cc
@@ -530,12 +530,20 @@ void AutofillManager::OnQueryFormFieldAutofill(int query_id,
     }
   }
 
-  // Add the results from AutoComplete.  They come back asynchronously, so we
-  // hand off what we generated and they will send the results back to the
-  // renderer.
-  autocomplete_history_manager_->OnGetAutocompleteSuggestions(
-      query_id, field.name, field.value, field.form_control_type, values,
-      labels, icons, unique_ids);
+  if (field.should_autocomplete) {
+    // Add the results from AutoComplete.  They come back asynchronously, so we
+    // hand off what we generated and they will send the results back to the
+    // renderer.
+    autocomplete_history_manager_->OnGetAutocompleteSuggestions(
+        query_id, field.name, field.value, field.form_control_type, values,
+        labels, icons, unique_ids);
+  } else {
+    // Autocomplete is disabled for this field; only pass back Autofill
+    // suggestions.
+    autocomplete_history_manager_->CancelPendingQuery();
+    external_delegate_->OnSuggestionsReturned(
+        query_id, values, labels, icons, unique_ids);
+  }
 }
 
 void AutofillManager::FillOrPreviewForm(