Make callers of CommandLine use it via the base:: namespace.

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 "ui/base/ui_base_switches.h"
 
 namespace switches {
 
 bool IsLinkDisambiguationPopupEnabled() {
 #if defined(OS_ANDROID)
   return true;
 #else
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
-      switches::kEnableLinkDisambiguationPopup)) {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableLinkDisambiguationPopup)) {
     return true;
   }
   return false;
 #endif
 }
 
 bool IsTextInputFocusManagerEnabled() {
-  return CommandLine::ForCurrentProcess()->HasSwitch(
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableTextInputFocusManager);
 }
 
 bool IsTouchDragDropEnabled() {
 #if defined(OS_CHROMEOS)
-  return !CommandLine::ForCurrentProcess()->HasSwitch(
+  return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableTouchDragDrop);
 #else
-  return CommandLine::ForCurrentProcess()->HasSwitch(
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableTouchDragDrop);
 #endif
 }
 
 bool IsTouchEditingEnabled() {
 #if defined(USE_AURA)
-  return !CommandLine::ForCurrentProcess()->HasSwitch(
+  return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kDisableTouchEditing);
 #else
-  return CommandLine::ForCurrentProcess()->HasSwitch(
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableTouchEditing);
 #endif
 }
 
 bool IsTouchFeedbackEnabled() {
-  static bool touch_feedback_enabled = !CommandLine::ForCurrentProcess()->
-      HasSwitch(switches::kDisableTouchFeedback);
+  static bool touch_feedback_enabled =
+      !base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableTouchFeedback);
   return touch_feedback_enabled;
 }
 
 }  // namespace switches