Opens the HaTS dialog with an empty HTML

chrome/common/url_constants.h

Index: chrome/common/url_constants.h
diff --git a/chrome/common/url_constants.h b/chrome/common/url_constants.h
index c388df73fb440c895fdab8532f8d47837c1ff103..ab0f3a0126a6aada48fe0df647bc327aa75db1e1 100644
--- a/chrome/common/url_constants.h
+++ b/chrome/common/url_constants.h
@@ -102,6 +102,7 @@ extern const char kChromeUICertificateManagerDialogURL[];
 extern const char kChromeUIChooseMobileNetworkURL[];
 extern const char kChromeUIDeviceEmulatorURL[];
 extern const char kChromeUIFirstRunURL[];
+extern const char kChromeUIHatsURL[];
 extern const char kChromeUIKeyboardOverlayURL[];
 extern const char kChromeUIMobileSetupURL[];
 extern const char kChromeUINfcDebugURL[];
@@ -270,6 +271,7 @@ extern const char kChromeUIChooseMobileNetworkHost[];
 extern const char kChromeUICryptohomeHost[];
 extern const char kChromeUIDeviceEmulatorHost[];
 extern const char kChromeUIFirstRunHost[];
+extern const char kChromeUIHatsHost[];
 extern const char kChromeUIKeyboardOverlayHost[];
 extern const char kChromeUILoginContainerHost[];
 extern const char kChromeUILoginHost[];