Change mojo enums to be scoped enums in the generated C++ bindings.

components/mus/public/cpp/lib/event_matcher.cc

Index: components/mus/public/cpp/lib/event_matcher.cc
diff --git a/components/mus/public/cpp/lib/event_matcher.cc b/components/mus/public/cpp/lib/event_matcher.cc
index e52e97cc4a5e505592eda0664c0d09f6795913a8..511a0e9494801d568137dc82406c0f955027505f 100644
--- a/components/mus/public/cpp/lib/event_matcher.cc
+++ b/components/mus/public/cpp/lib/event_matcher.cc
@@ -6,21 +6,19 @@
 
 namespace mus {
 
-mojom::EventMatcherPtr CreateKeyMatcher(mojom::KeyboardCode code,
-                                        mojom::EventFlags flags) {
+mojom::EventMatcherPtr CreateKeyMatcher(mojom::KeyboardCode code, int flags) {
   mojom::EventMatcherPtr matcher(mojom::EventMatcher::New());
   matcher->type_matcher = mojom::EventTypeMatcher::New();
   matcher->flags_matcher = mojom::EventFlagsMatcher::New();
   matcher->ignore_flags_matcher = mojom::EventFlagsMatcher::New();
   // Ignoring these makes most accelerator scenarios more straight forward. Code
   // that needs to check them can override this setting.
-  matcher->ignore_flags_matcher->flags =
-      static_cast<mojom::EventFlags>(mojom::EVENT_FLAGS_CAPS_LOCK_DOWN |
-                                     mojom::EVENT_FLAGS_SCROLL_LOCK_DOWN |
-                                     mojom::EVENT_FLAGS_NUM_LOCK_DOWN);
+  matcher->ignore_flags_matcher->flags = mojom::kEventFlagCapsLockDown |
+                                         mojom::kEventFlagScrollLockDown |
+                                         mojom::kEventFlagNumLockDown;
   matcher->key_matcher = mojom::KeyEventMatcher::New();
 
-  matcher->type_matcher->type = mus::mojom::EVENT_TYPE_KEY_PRESSED;
+  matcher->type_matcher->type = mus::mojom::EventType::KEY_PRESSED;
   matcher->flags_matcher->flags = flags;
   matcher->key_matcher->keyboard_code = code;
   return matcher;