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

chrome/browser/ui/app_list/app_list_service_interactive_uitest.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/app_list/app_list_service.h"
 
 #include "base/command_line.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 127 matching lines @@
 
   controller->DismissView();
   ASSERT_FALSE(service->IsAppListVisible());
 }
 
 // Interactive UI test that adds the --show-app-list command line switch.
 class ShowAppListInteractiveTest : public InProcessBrowserTest {
  public:
   ShowAppListInteractiveTest() {}
 
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     command_line->AppendSwitch(switches::kShowAppList);
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ShowAppListInteractiveTest);
 };
 
 // Test showing the app list using the command line switch.
 #if defined(OS_CHROMEOS)
 // http://crbug.com/396499
@@ skipping 12 matching lines @@
   // any browsers.
   Profile* profile = service->GetCurrentAppListProfile();
   CreateBrowser(profile);
 
   service->DismissAppList();
   EXPECT_FALSE(service->IsAppListVisible());
 
   // With Chrome still running, test receiving a second --show-app-list request
   // via the process singleton. ChromeOS has no process singleton so exclude it.
 #if !defined(OS_CHROMEOS)
-  CommandLine command_line(CommandLine::NO_PROGRAM);
+  base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
   command_line.AppendSwitch(switches::kShowAppList);
   StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
       command_line, base::FilePath(), profile->GetPath());
 
   EXPECT_TRUE(service->IsAppListVisible());
   service->DismissAppList();
   EXPECT_FALSE(service->IsAppListVisible());
 #endif
 }
 
@@ skipping 69 matching lines @@
   CreateBrowser(profile_manager->GetLastUsedProfile());
 
   // Delete the profile being used by the app list.
   profile_manager->ScheduleProfileForDeletion(
       service->GetCurrentAppListProfile()->GetPath(),
       ProfileManager::CreateCallback());
 
   // App Launcher should get closed immediately and nothing should explode.
   EXPECT_FALSE(service->IsAppListVisible());
 }