Add a screen to migrate filesystem encryption from eCryptfs to ext4 crypto.

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 6402e03fed7fe9755da3bcd53de3eb90db4da926..0d50b488f4cb0c0a3a435f200c741393346feb95 100644
--- a/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
@@ -38,6 +38,7 @@
 #include "chrome/browser/ui/webui/chromeos/login/controller_pairing_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/device_disabled_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/enable_debugging_screen_handler.h"
+#include "chrome/browser/ui/webui/chromeos/login/encryption_migration_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/error_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/eula_screen_handler.h"
@@ -291,6 +292,8 @@ OobeUI::OobeUI(content::WebUI* web_ui, const GURL& url)
 
   AddScreenHandler(base::MakeUnique<DeviceDisabledScreenHandler>());
 
+  AddScreenHandler(base::MakeUnique<EncryptionMigrationScreenHandler>());
+
   // Initialize KioskAppMenuHandler. Note that it is NOT a screen handler.
   auto kiosk_app_menu_handler =
       base::MakeUnique<KioskAppMenuHandler>(network_state_informer_);
@@ -403,6 +406,10 @@ DeviceDisabledScreenView* OobeUI::GetDeviceDisabledScreenView() {
   return GetView<DeviceDisabledScreenHandler>();
 }
 
+EncryptionMigrationScreenView* OobeUI::GetEncryptionMigrationScreenView() {
+  return GetView<EncryptionMigrationScreenHandler>();
+}
+
 UserImageView* OobeUI::GetUserImageView() {
   return GetView<UserImageScreenHandler>();
 }