Move CommandLine to base namespace.

chrome/browser/ui/extensions/application_launch.h

Index: chrome/browser/ui/extensions/application_launch.h
diff --git a/chrome/browser/ui/extensions/application_launch.h b/chrome/browser/ui/extensions/application_launch.h
index 280d549b87e0a9e8f03095a499838ac024dfa2c8..e18211aad5ff6827cb28e42861e786e6cba96a7f 100644
--- a/chrome/browser/ui/extensions/application_launch.h
+++ b/chrome/browser/ui/extensions/application_launch.h
@@ -14,9 +14,12 @@
 #include "url/gurl.h"
 
 class Browser;
-class CommandLine;
 class Profile;
 
+namespace base {
+class CommandLine;
+}
+
 namespace content {
 class WebContents;
 }
@@ -72,7 +75,7 @@ struct AppLaunchParams {
 
   // If non-empty, information from the command line may be passed on to the
   // application.
-  CommandLine command_line;
+  base::CommandLine command_line;
 
   // If non-empty, the current directory from which any relative paths on the
   // command line should be expanded from.