Refactor oobe/login screens so lock screen can be loaded faster.

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

Index: chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc b/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
index c7242541866322874bba5e7f1bd79f63267d7a18..7a21168c3e1f862407f37b338b7d2b40b61ab2d5 100644
--- a/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
@@ -92,6 +92,7 @@ OobeScreen kDimOverlayScreenIds[] = {
 };
 
 const char kStringsJSPath[] = "strings.js";
+const char kLockJSPath[] = "lock.js";
 const char kLoginJSPath[] = "login.js";
 const char kOobeJSPath[] = "oobe.js";
 const char kKeyboardUtilsJSPath[] = "keyboard_utils.js";
@@ -118,6 +119,12 @@ content::WebUIDataSource* CreateOobeUIDataSource(
     source->AddResourcePath(kCustomElementsHTMLPath,
                             IDR_CUSTOM_ELEMENTS_OOBE_HTML);
     source->AddResourcePath(kCustomElementsJSPath, IDR_CUSTOM_ELEMENTS_OOBE_JS);
+  } else if (display_type == OobeUI::kLockDisplay) {
+    source->SetDefaultResource(IDR_LOCK_HTML);
+    source->AddResourcePath(kLockJSPath, IDR_LOCK_JS);
+    source->AddResourcePath(kCustomElementsHTMLPath,
+                            IDR_CUSTOM_ELEMENTS_LOCK_HTML);
+    source->AddResourcePath(kCustomElementsJSPath, IDR_CUSTOM_ELEMENTS_LOCK_JS);
   } else {
     source->SetDefaultResource(IDR_LOGIN_HTML);
     source->AddResourcePath(kLoginJSPath, IDR_LOGIN_JS);