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

chrome/browser/safe_browsing/safe_browsing_service_browsertest.cc

 // 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.
 //
 // This test creates a safebrowsing service using test safebrowsing database
 // and a test protocol manager. It is used to test logics in safebrowsing
 // service.
 
 #include <algorithm>
 
@@ skipping 386 matching lines @@
   virtual void TearDown() {
     InProcessBrowserTest::TearDown();
 
     // Unregister test factories after InProcessBrowserTest::TearDown
     // (which destructs SafeBrowsingService).
     SafeBrowsingDatabase::RegisterFactory(NULL);
     SafeBrowsingProtocolManager::RegisterFactory(NULL);
     SafeBrowsingService::RegisterFactory(NULL);
   }
 
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
     // Makes sure the auto update is not triggered during the test.
     // This test will fill up the database using testing prefixes
     // and urls.
     command_line->AppendSwitch(switches::kSbDisableAutoUpdate);
 #if defined(OS_CHROMEOS)
     command_line->AppendSwitch(
         chromeos::switches::kIgnoreUserProfileMappingForTests);
 #endif
   }
 
@@ skipping 815 matching lines @@
   content::WindowedNotificationObserver observer(
       chrome::NOTIFICATION_SAFE_BROWSING_UPDATE_COMPLETE,
       content::Source<SafeBrowsingDatabaseManager>(
           sb_service_->database_manager().get()));
   BrowserThread::PostTask(
       BrowserThread::IO,
       FROM_HERE,
       base::Bind(&SafeBrowsingDatabaseManagerCookieTest::ForceUpdate, this));
   observer.Wait();
 }