[cros] Update wallpaper when displaying Gaia frame.

chrome/browser/chromeos/login/webui_login_display.cc

Index: chrome/browser/chromeos/login/webui_login_display.cc
diff --git a/chrome/browser/chromeos/login/webui_login_display.cc b/chrome/browser/chromeos/login/webui_login_display.cc
index 18b0ac2192d317ffa64b69f822442f34da3a8d5d..553722be5d23deae928ff65a6c9c38be5998a1e3 100644
--- a/chrome/browser/chromeos/login/webui_login_display.cc
+++ b/chrome/browser/chromeos/login/webui_login_display.cc
@@ -196,12 +196,12 @@ void WebUILoginDisplay::CreateAccount() {
     delegate_->CreateAccount();
 }
 
-void WebUILoginDisplay::OnUserDeselected() {
-  WallpaperManager::Get()->OnUserDeselected();
+void WebUILoginDisplay::LoadWallpaper(const std::string& username) {
+  WallpaperManager::Get()->SetUserWallpaper(username);
 }
 
-void WebUILoginDisplay::OnUserSelected(const std::string& username) {
-  WallpaperManager::Get()->OnUserSelected(username);
+void WebUILoginDisplay::LoadSigninWallpaper() {
+  WallpaperManager::Get()->SetSigninWallpaper();
 }
 
 void WebUILoginDisplay::RemoveUser(const std::string& username) {