[vr] Bail on unhandled code points.

chrome/browser/android/vr_shell/vr_browser_interface.h

Index: chrome/browser/android/vr_shell/vr_browser_interface.h
diff --git a/chrome/browser/android/vr_shell/vr_browser_interface.h b/chrome/browser/android/vr_shell/vr_browser_interface.h
index 0c0ef226913a8c843f4ea203cbb5e92202bd5fa5..eeb4f1bb36b88a945092ed59046050a72f3f61dc 100644
--- a/chrome/browser/android/vr_shell/vr_browser_interface.h
+++ b/chrome/browser/android/vr_shell/vr_browser_interface.h
@@ -12,6 +12,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "chrome/browser/android/vr_shell/ui_interface.h"
+#include "chrome/browser/android/vr_shell/ui_unsupported_mode.h"
 #include "device/vr/android/gvr/gvr_gamepad_data_provider.h"
 #include "device/vr/vr_service.mojom.h"
 
@@ -44,6 +45,7 @@ class VrBrowserInterface {
   virtual void NavigateBack() = 0;
   virtual void ExitCct() = 0;
   virtual void ToggleCardboardGamepad(bool enabled) = 0;
+  virtual void OnUnsupportedMode(UiUnsupportedMode mode) = 0;
 };
 
 }  // namespace vr_shell