Add UI components for license type selection in ChromeOS login UI.

chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
index d8a0dee8d8f1c28ce3d6aa1f36280be91edc8820..a13f4aea87f52e37d3630e483227a46c45233804 100644
--- a/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/enrollment_screen_handler.h
@@ -55,6 +55,8 @@ class EnrollmentScreenHandler
   void Show() override;
   void Hide() override;
   void ShowSigninScreen() override;
+  void ShowLicenseTypeSelectionScreen(
+      const base::DictionaryValue& license_types) override;
   void ShowAdJoin() override;
   void ShowAttributePromptScreen(const std::string& asset_id,
                                  const std::string& location) override;
@@ -88,6 +90,7 @@ class EnrollmentScreenHandler
   void HandleDeviceAttributesProvided(const std::string& asset_id,
                                       const std::string& location);
   void HandleOnLearnMore();
+  void HandleLicenseTypeSelected(const std::string& licenseType);
 
   void UpdateStateInternal(NetworkError::ErrorReason reason, bool force_update);
   void SetupAndShowOfflineMessage(NetworkStateInformer::State state,