cros: HTML fixes needed to reinitializing an existing lock WebUI.

chrome/browser/chromeos/login/screens/user_selection_screen.cc

Index: chrome/browser/chromeos/login/screens/user_selection_screen.cc
diff --git a/chrome/browser/chromeos/login/screens/user_selection_screen.cc b/chrome/browser/chromeos/login/screens/user_selection_screen.cc
index 9ebe8f375ad308cc8361b73fae70b83f20036148..e5e2949b9f6fd44d8facae6b69ea17cf72c388e1 100644
--- a/chrome/browser/chromeos/login/screens/user_selection_screen.cc
+++ b/chrome/browser/chromeos/login/screens/user_selection_screen.cc
@@ -269,6 +269,13 @@ bool UserSelectionScreen::ShouldForceOnlineSignIn(
 
 void UserSelectionScreen::SetHandler(LoginDisplayWebUIHandler* handler) {
   handler_ = handler;
+
+  if (handler_) {
+    // Forcibly refresh all of the user images, as the |handler_| instance may
+    // have been reused.
+    for (user_manager::User* user : users_)
+      handler_->OnUserImageChanged(*user);
+  }
 }
 
 void UserSelectionScreen::SetView(UserBoardView* view) {