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

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_controller_unittest.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 <Cocoa/Cocoa.h>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsobject.h"
@@ skipping 272 matching lines @@
  public:
   base::scoped_nsobject<NSView> parent_view_;
   base::scoped_nsobject<ViewResizerPong> resizeDelegate_;
 
   virtual void SetUp() {
     CocoaProfileTest::SetUp();
     ASSERT_TRUE(profile());
 
     base::FilePath extension_dir;
     static_cast<extensions::TestExtensionSystem*>(
-        extensions::ExtensionSystem::Get(profile()))->
-        CreateExtensionService(
-            CommandLine::ForCurrentProcess(),
-            extension_dir, false);
+        extensions::ExtensionSystem::Get(profile()))
+        ->CreateExtensionService(base::CommandLine::ForCurrentProcess(),
+                                 extension_dir, false);
     resizeDelegate_.reset([[ViewResizerPong alloc] init]);
     NSRect parent_frame = NSMakeRect(0, 0, 800, 50);
     parent_view_.reset([[NSView alloc] initWithFrame:parent_frame]);
     [parent_view_ setHidden:YES];
   }
 
   void InstallAndToggleBar(BookmarkBarController* bar) {
     // Force loading of the nib.
     [bar view];
     // Awkwardness to look like we've been installed.
@@ skipping 1817 matching lines @@
                              "2f3b ] 4b ");
   actual = bookmarks::test::ModelStringFromNode(root);
   EXPECT_EQ(expected, actual);
 
   // Verify that the other bookmark folder can't be deleted.
   BookmarkButton *otherButton = [bar_ otherBookmarksButton];
   EXPECT_FALSE([bar_ canDragBookmarkButtonToTrash:otherButton]);
 }
 
 }  // namespace