Disable VK overscroll for login/out-of-box.

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
index 9f905f077324579e2de62575ed5ad387b379de07..00f040237bedb57379d3edae03057cf13e38da4d 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
@@ -905,6 +905,14 @@ void SigninScreenHandler::ShowControlBar(bool show) {
   core_oobe_actor_->ShowControlBar(show);
 }
 
+void SigninScreenHandler::SetKeyboardState(bool shown) {
+  core_oobe_actor_->SetKeyboardState(shown);
+}
+
+void SigninScreenHandler::SetClientAreaSize(int width, int height) {
+  core_oobe_actor_->SetClientAreaSize(width, height);
+}
+
 void SigninScreenHandler::ShowGaiaPasswordChanged(const std::string& username) {
   email_ = username;
   password_changed_for_.insert(email_);