Remove InputMethodEventHandler.

ui/events/event_constants.h

Index: ui/events/event_constants.h
diff --git a/ui/events/event_constants.h b/ui/events/event_constants.h
index c7736622783d2335da227a73f470beeaa3012a38..9c46d6372c54a3f56dfef4f3216f98f3ba3c810b 100644
--- a/ui/events/event_constants.h
+++ b/ui/events/event_constants.h
@@ -121,10 +121,10 @@ enum KeyEventFlags {
   EF_IME_FABRICATED_KEY = 1 << 15,  // Key event fabricated by the underlying
                                     // IME without a user action.
                                     // (Linux X11 only)
-  EF_IS_REPEAT          = 1 << 16,
-  EF_FINAL              = 1 << 17,  // Do not remap; the event was created with
-                                    // the desired final values.
-  EF_IS_EXTENDED_KEY    = 1 << 18,  // Windows extended key (see WM_KEYDOWN doc)
+  EF_IS_REPEAT = 1 << 16,
+  EF_FINAL = 1 << 17,            // Do not remap; the event was created with
+                                 // the desired final values.
+  EF_IS_EXTENDED_KEY = 1 << 18,  // Windows extended key (see WM_KEYDOWN doc)
 };
 
 // Flags specific to mouse events