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

chrome/browser/ui/cocoa/presentation_mode_controller.mm

 // Copyright (c) 2012 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.
 
 #import "chrome/browser/ui/cocoa/presentation_mode_controller.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #import "base/mac/mac_util.h"
@@ skipping 316 matching lines @@
     [browserController_ lockBarVisibilityForOwner:self
                                     withAnimation:NO
                                             delay:NO];
   [self setupTrackingArea];
 }
 
 - (void)ensureOverlayShownWithAnimation:(BOOL)animate delay:(BOOL)delay {
   if (!inPresentationMode_)
     return;
 
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kKioskMode))
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kKioskMode))
     return;
 
   if (self.slidingStyle == fullscreen_mac::OMNIBOX_TABS_PRESENT)
     return;
 
   if (animate) {
     if (delay) {
       [self startShowTimer];
     } else {
       [self cancelAllTimers];
@@ skipping 394 matching lines @@
   [self updateMenuBarAndDockVisibility];
 
   // TODO(rohitrao): Remove the Exit Fullscreen button.  http://crbug.com/35956
 }
 
 - (BOOL)shouldShowMenubarInImmersiveFullscreen {
   return [self doesScreenHaveMenuBar] && toolbarFraction_ > 0.99;
 }
 
 @end