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

chrome/browser/chromeos/preferences_browsertest.cc

 // Copyright 2014 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 <sys/types.h>
 
 #include "ash/shell.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/prefs/pref_service.h"
@@ skipping 26 matching lines @@
 
 }  // namespace
 
 class PreferencesTest : public LoginManagerTest {
  public:
   PreferencesTest()
       : LoginManagerTest(true),
         input_settings_(NULL),
         keyboard_(NULL) {}
 
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
     LoginManagerTest::SetUpCommandLine(command_line);
     command_line->AppendSwitch(switches::kStubCrosSettings);
   }
 
   virtual void SetUpOnMainThread() override {
     LoginManagerTest::SetUpOnMainThread();
     input_settings_ = new system::FakeInputDeviceSettings();
     system::InputDeviceSettings::SetSettingsForTesting(input_settings_);
     keyboard_ = new input_method::FakeImeKeyboard();
     static_cast<input_method::InputMethodManagerImpl*>(
@@ skipping 144 matching lines @@
                      !prefs1->GetBoolean(prefs::kTapToClickEnabled));
   CheckLocalStateCorrespondsToPrefs(prefs1);
 
   // Switch user back.
   user_manager->SwitchActiveUser(kTestUsers[0]);
   CheckSettingsCorrespondToPrefs(prefs1);
   CheckLocalStateCorrespondsToPrefs(prefs1);
 }
 
 }  // namespace chromeos