Add missing comment from 354304bc08fc69

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 291 matching lines @@
 
   const WebInputElement* input_element = toWebInputElement(&element);
   if (!input_element && !IsTextAreaElement(element))
     return;
 
   ShowSuggestionsOptions options;
   options.autofill_on_empty_values = true;
   options.display_warning_if_disabled = true;
   options.show_full_suggestion_list = element.isAutofilled();
 
+  // On Android, default to showing the dropdown on field focus.
+  // On desktop, require an extra click after field focus.
+  // See http://crbug.com/427660
 #if defined(OS_ANDROID)
   bool single_click_autofill =
       !base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableSingleClickAutofill);
 #else
   bool single_click_autofill =
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableSingleClickAutofill);
 #endif
 
@@ skipping 463 matching lines @@
 
 void AutofillAgent::LegacyAutofillAgent::OnDestruct() {
   // No-op. Don't delete |this|.
 }
 
 void AutofillAgent::LegacyAutofillAgent::FocusChangeComplete() {
   agent_->FocusChangeComplete();
 }
 
 }  // namespace autofill