aura: Remove client::UserActionClient.

chrome/browser/ui/ash/chrome_shell_delegate.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.cc b/chrome/browser/ui/ash/chrome_shell_delegate.cc
index 5fe057441efbceda1cb29e3c9bb08f61d135129d..bffe74566fb04ac256e79c516ce595a156785255 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.cc
@@ -21,7 +21,6 @@
 #include "chrome/browser/ui/ash/ash_keyboard_controller_proxy.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
-#include "chrome/browser/ui/ash/user_action_handler.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/common/chrome_switches.h"
 #include "grit/chromium_strings.h"
@@ -125,10 +124,6 @@ ash::ShelfDelegate* ChromeShellDelegate::CreateShelfDelegate(
   return shelf_delegate_;
 }
 
-aura::client::UserActionClient* ChromeShellDelegate::CreateUserActionClient() {
-  return new UserActionHandler;
-}
-
 ui::MenuModel* ChromeShellDelegate::CreateContextMenu(
     aura::Window* root,
     ash::ShelfItemDelegate* item_delegate,