cros: Cleanup lock screen and OOBE C++ backing code.

chrome/browser/chromeos/login/ui/lock_window.cc

Index: chrome/browser/chromeos/login/ui/lock_window.cc
diff --git a/chrome/browser/chromeos/login/ui/lock_window.cc b/chrome/browser/chromeos/login/ui/lock_window.cc
index 41557acab760ce250f5ce611f92cec884d0e4a52..ff4cd837af57338f76d07015b2a9850fc4c504c8 100644
--- a/chrome/browser/chromeos/login/ui/lock_window.cc
+++ b/chrome/browser/chromeos/login/ui/lock_window.cc
@@ -22,19 +22,12 @@ LockWindow::LockWindow() {
   params.parent =
       ash::Shell::GetContainer(ash::Shell::GetPrimaryRootWindow(),
                                ash::kShellWindowId_LockScreenContainer);
-  views::Widget::Init(params);
+  Init(params);
   SetVisibilityAnimationTransition(views::Widget::ANIMATE_NONE);
 }
 
 LockWindow::~LockWindow() {}
 
-void LockWindow::Grab() {
-  // We already have grab from the lock screen container, just call the ready
-  // callback immediately.
-  if (observer_)
-    observer_->OnLockWindowReady();
-}
-
 views::Widget* LockWindow::GetWidget() {
   return this;
 }