Move CommandLine to base namespace.

chrome/browser/background/background_mode_manager.h

Index: chrome/browser/background/background_mode_manager.h
diff --git a/chrome/browser/background/background_mode_manager.h b/chrome/browser/background/background_mode_manager.h
index ae9bd484b18418ff59e267ab457a28b6ff4add59..4d87aca19e63da66bd3f46349242621560db1c90 100644
--- a/chrome/browser/background/background_mode_manager.h
+++ b/chrome/browser/background/background_mode_manager.h
@@ -20,13 +20,16 @@
 #include "content/public/browser/notification_registrar.h"
 
 class Browser;
-class CommandLine;
 class PrefRegistrySimple;
 class Profile;
 class ProfileInfoCache;
 class StatusIcon;
 class StatusTray;
 
+namespace base {
+class CommandLine;
+}
+
 namespace extensions {
 class Extension;
 }
@@ -54,7 +57,7 @@ class BackgroundModeManager
       public ProfileInfoCacheObserver,
       public StatusIconMenuModel::Delegate {
  public:
-  BackgroundModeManager(CommandLine* command_line,
+  BackgroundModeManager(base::CommandLine* command_line,
                         ProfileInfoCache* profile_cache);
   virtual ~BackgroundModeManager();