[Autofill] Respect the autocomplete=off attribute.

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 e3c5e3c66c9fc84f24197da1106f06db992fd77a..dca717dd0bfe205c8592bb557630c099d9c673a0 100644
--- a/components/autofill/core/browser/autofill_manager.cc
+++ b/components/autofill/core/browser/autofill_manager.cc
@@ -49,6 +49,7 @@
 #include "components/autofill/core/common/autofill_data_validation.h"
 #include "components/autofill/core/common/autofill_pref_names.h"
 #include "components/autofill/core/common/autofill_switches.h"
+#include "components/autofill/core/common/autofill_util.h"
 #include "components/autofill/core/common/form_data.h"
 #include "components/autofill/core/common/form_data_predictions.h"
 #include "components/autofill/core/common/form_field_data.h"
@@ -407,6 +408,12 @@ void AutofillManager::OnQueryFormFieldAutofill(int query_id,
       got_autofillable_form) {
     AutofillType type = autofill_field->Type();
     bool is_filling_credit_card = (type.group() == CREDIT_CARD);
+    // On desktop, don't return non credit card related suggestions for forms or
+    // fields that have the "autocomplete" attribute set to off.
+    if (IsDesktopPlatform() && !is_filling_credit_card &&
+        !field.should_autocomplete) {
+      return;
+    }
     if (is_filling_credit_card) {
       suggestions = GetCreditCardSuggestions(field, type);
     } else {