Move CommandLine to base namespace.

chrome/browser/background/background_contents_service.h

Index: chrome/browser/background/background_contents_service.h
diff --git a/chrome/browser/background/background_contents_service.h b/chrome/browser/background/background_contents_service.h
index 87f5d97d165ef1ba4dcb0cc9c4ef370446c66b02..05f095330c3ddcad3bc528e909baf3b5890a8c29 100644
--- a/chrome/browser/background/background_contents_service.h
+++ b/chrome/browser/background/background_contents_service.h
@@ -19,11 +19,11 @@
 #include "ui/base/window_open_disposition.h"
 #include "url/gurl.h"
 
-class CommandLine;
 class PrefService;
 class Profile;
 
 namespace base {
+class CommandLine;
 class DictionaryValue;
 }
 
@@ -53,7 +53,8 @@ class BackgroundContentsService : private content::NotificationObserver,
                                   public BackgroundContents::Delegate,
                                   public KeyedService {
  public:
-  BackgroundContentsService(Profile* profile, const CommandLine* command_line);
+  BackgroundContentsService(Profile* profile,
+                            const base::CommandLine* command_line);
   virtual ~BackgroundContentsService();
 
   // Allows tests to reduce the time between a force-installed app/extension