Avoid considering readonly password elements in password form

components/autofill/content/renderer/password_form_conversion_utils.cc

Index: components/autofill/content/renderer/password_form_conversion_utils.cc
diff --git a/components/autofill/content/renderer/password_form_conversion_utils.cc b/components/autofill/content/renderer/password_form_conversion_utils.cc
index 7ad5814273126fa24f9014b298a63b3ed370cebd..74708ef4cf5d53f380a5952771ac73f0902c0455 100644
--- a/components/autofill/content/renderer/password_form_conversion_utils.cc
+++ b/components/autofill/content/renderer/password_form_conversion_utils.cc
@@ -254,7 +254,14 @@ void GetPasswordForm(
         layout_sequence.push_back('N');
     }
 
-    if (input_element->isPasswordField()) {
+    // If the password field is readonly, the page is likely using a virtual
+    // keyboard and bypassing the password field value (see
+    // http://crbug.com/475488). There is nothing Chrome can do to fill
+    // passwords for now.
+    if (input_element->isPasswordField() &&
+        (!input_element->isReadOnly() ||
+         HasAutocompleteAttributeValue(*input_element, "current_password") ||
+         HasAutocompleteAttributeValue(*input_element, "new-password"))) {
       passwords.push_back(*input_element);
       // If we have not yet considered any element to be the username so far,
       // provisionally select the input element just before the first password