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

chrome/browser/ui/cocoa/browser_window_controller_private.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/browser_window_controller_private.h"
 
 #include <cmath>
 
 #include "base/command_line.h"
 #include "base/mac/bind_objc_block.h"
@@ skipping 419 matching lines @@
                   object:[notification object]];
   [self releaseBarVisibilityForOwner:[notification object]
                        withAnimation:YES
                                delay:YES];
 }
 
 - (void)configurePresentationModeController {
   BOOL fullscreen_for_tab =
       browser_->fullscreen_controller()->IsWindowFullscreenForTabOrPending();
   BOOL kiosk_mode =
-      CommandLine::ForCurrentProcess()->HasSwitch(switches::kKioskMode);
+      base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kKioskMode);
   BOOL showDropdown =
       !fullscreen_for_tab && !kiosk_mode && ([self floatingBarHasFocus]);
   if (permissionBubbleCocoa_ && permissionBubbleCocoa_->IsVisible()) {
     DCHECK(permissionBubbleCocoa_->window());
     // A visible permission bubble will force the dropdown to remain visible.
     [self lockBarVisibilityForOwner:permissionBubbleCocoa_->window()
                       withAnimation:NO
                               delay:NO];
     showDropdown = YES;
     // Register to be notified when the permission bubble is closed, to
@@ skipping 569 matching lines @@
   }
   if (!enteringAppKitFullscreen_)
     return NO;
   if (enteringAppKitFullscreenOnPrimaryScreen_)
     return NO;
 
   return YES;
 }
 
 @end  // @implementation BrowserWindowController(Private)