cros: Clean up screenlockPrivate plumbing.

chrome/browser/ui/webui/signin/user_manager_screen_handler.cc

Index: chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
diff --git a/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc b/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
index 7427e2803e62622e49a906e2c4d109dd4939d5b3..32e81d9624467be5c771ef0fd736daf3362418e6 100644
--- a/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
+++ b/chrome/browser/ui/webui/signin/user_manager_screen_handler.cc
@@ -61,7 +61,6 @@ const char kJsApiUserManagerAuthLaunchUser[] = "authenticatedLaunchUser";
 const char kJsApiUserManagerLaunchGuest[] = "launchGuest";
 const char kJsApiUserManagerLaunchUser[] = "launchUser";
 const char kJsApiUserManagerRemoveUser[] = "removeUser";
-const char kJsApiUserManagerCustomButtonClicked[] = "customButtonClicked";
 const char kJsApiUserManagerAttemptUnlock[] = "attemptUnlock";
 
 const size_t kAvatarIconSize = 180;
@@ -141,7 +140,7 @@ extensions::ScreenlockPrivateEventRouter* GetScreenlockRouter(
       profile);
 }
 
-} // namespace
+}  // namespace
 
 // ProfileUpdateObserver ------------------------------------------------------
 
@@ -222,8 +221,7 @@ void UserManagerScreenHandler::ShowBannerMessage(const std::string& message) {
 
 void UserManagerScreenHandler::ShowUserPodButton(
     const std::string& user_email,
-    const gfx::Image& icon,
-    const base::Closure& callback) {
+    const gfx::Image& icon) {
   GURL icon_url(webui::GetBitmapDataUrl(icon.AsBitmap()));
   web_ui()->CallJavascriptFunction(
       "login.AccountPickerScreen.showUserPodButton",
@@ -403,11 +401,6 @@ void UserManagerScreenHandler::HandleLaunchUser(const base::ListValue* args) {
                             ProfileMetrics::SWITCH_PROFILE_MANAGER);
 }
 
-void UserManagerScreenHandler::HandleCustomButtonClicked(
-    const base::ListValue* args) {
-  // TODO(xiyuan): Remove this. Deprecated now.
-}
-
 void UserManagerScreenHandler::HandleAttemptUnlock(
     const base::ListValue* args) {
   std::string email;
@@ -457,9 +450,6 @@ void UserManagerScreenHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(kJsApiUserManagerRemoveUser,
       base::Bind(&UserManagerScreenHandler::HandleRemoveUser,
                  base::Unretained(this)));
-  web_ui()->RegisterMessageCallback(kJsApiUserManagerCustomButtonClicked,
-      base::Bind(&UserManagerScreenHandler::HandleCustomButtonClicked,
-                 base::Unretained(this)));
   web_ui()->RegisterMessageCallback(kJsApiUserManagerAttemptUnlock,
       base::Bind(&UserManagerScreenHandler::HandleAttemptUnlock,
                  base::Unretained(this)));