Fill on account select in the password manager behind a flag

components/autofill/content/renderer/autofill_agent.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/content/renderer/autofill_agent.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_split.h"
@@ skipping 592 matching lines @@
 
 void AutofillAgent::ShowSuggestions(const WebFormControlElement& element,
                                     const ShowSuggestionsOptions& options) {
   if (!element.isEnabled() || element.isReadOnly())
     return;
   if (!options.datalist_only && !element.suggestedValue().isEmpty())
     return;
 
   const WebInputElement* input_element = toWebInputElement(&element);
   if (input_element) {
-    if (!input_element->isTextField() || input_element->isPasswordField())
+    if (!input_element->isTextField())
       return;
     if (!options.datalist_only && !input_element->suggestedValue().isEmpty())
       return;
   } else {
     DCHECK(IsTextAreaElement(element));
     if (!element.toConst<WebTextAreaElement>().suggestedValue().isEmpty())
       return;
   }
 
   // Don't attempt to autofill with values that are too large or if filling
@@ skipping 12 matching lines @@
 
   element_ = element;
   if (IsAutofillableInputElement(input_element) &&
       (password_autofill_agent_->ShowSuggestions(
            *input_element, options.show_full_suggestion_list) ||
        options.show_password_suggestions_only)) {
     is_popup_possibly_visible_ = true;
     return;
   }
 
+  // Password field elements should only have suggestions shown by the password
+  // autofill agent.
+  if (input_element && input_element->isPasswordField())
+    return;
+
   // If autocomplete is disabled at the field level, ensure that the native
   // UI won't try to show a warning, since that may conflict with a custom
   // popup. Note that we cannot use the WebKit method element.autoComplete()
   // as it does not allow us to distinguish the case where autocomplete is
   // disabled for *both* the element and for the form.
   bool display_warning = options.display_warning_if_disabled;
   if (display_warning) {
     const base::string16 autocomplete_attribute =
         element.getAttribute("autocomplete");
     if (LowerCaseEqualsASCII(autocomplete_attribute, "off"))
@@ skipping 171 matching lines @@
 void AutofillAgent::LegacyAutofillAgent::Resized() {
   agent_->Resized();
 }
 
 void AutofillAgent::LegacyAutofillAgent::FrameWillClose(
     blink::WebFrame* frame) {
   agent_->LegacyFrameWillClose(frame);
 }
 
 }  // namespace autofill