Erase LinkDisambiguation code on desktop.

ui/base/ui_base_switches_util.cc

 // Copyright (c) 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 "ui/base/ui_base_switches_util.h"
 
 #include "base/command_line.h"
 #include "build/build_config.h"
 #include "ui/base/ui_base_switches.h"
 
 namespace switches {
 
-bool IsLinkDisambiguationPopupEnabled() {
-#if defined(OS_ANDROID)
-  return true;
-#else
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableLinkDisambiguationPopup)) {
-    return true;
-  }
-  return false;
-#endif
-}
-
 bool IsTouchDragDropEnabled() {
 #if defined(OS_CHROMEOS)
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableTouchDragDrop);
 #else
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableTouchDragDrop);
 #endif
 }
 
 bool IsTouchFeedbackEnabled() {
   static bool touch_feedback_enabled =
       !base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableTouchFeedback);
   return touch_feedback_enabled;
 }
 
 }  // namespace switches