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

chrome/browser/ui/bookmarks/bookmark_bubble_sign_in_delegate_unittest.cc

 // Copyright 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 "chrome/browser/ui/bookmarks/bookmark_bubble_sign_in_delegate.h"
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/test_extension_service.h"
@@ skipping 32 matching lines @@
   };
 
   BrowserWindow* CreateBrowserWindow() override { return new Window(); }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BookmarkBubbleSignInDelegateTest);
 };
 
 void BookmarkBubbleSignInDelegateTest::SetUp() {
   BrowserWithTestWindowTest::SetUp();
-  CommandLine* command_line = CommandLine::ForCurrentProcess();
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   // Force web-based signin, otherwise tests will crash because inline signin
   // involves IO thread operation.
   // TODO(guohui): fix the test for inline signin.
   command_line->AppendSwitch(switches::kEnableWebBasedSignin);
   // Adds TestExtensionSystem, since signin uses the gaia auth extension.
   static_cast<extensions::TestExtensionSystem*>(
       extensions::ExtensionSystem::Get(profile()))->CreateExtensionService(
           command_line, base::FilePath(), false);
 }
 
@@ skipping 76 matching lines @@
   // visible.
   int tab_count = extra_browser->tab_strip_model()->count();
   EXPECT_EQ(starting_tab_count + 1, tab_count);
   EXPECT_LE(1,
             static_cast<BookmarkBubbleSignInDelegateTest::Window*>(
                 extra_window.get())->show_count());
 
   // Required to avoid a crash when the browser is deleted.
   extra_browser->tab_strip_model()->CloseAllTabs();
 }