Corrects the regression of [a-z] keys for non-US layouts would have wrong VKEY code if CAPSLOCK is …

ui/events/keycodes/keyboard_code_conversion_x.cc

Index: ui/events/keycodes/keyboard_code_conversion_x.cc
diff --git a/ui/events/keycodes/keyboard_code_conversion_x.cc b/ui/events/keycodes/keyboard_code_conversion_x.cc
index 20c329771e7f75dd6345aba42c82ba077c437114..0a226fcef288331b983ee292914fcd5ab7bb0d76 100644
--- a/ui/events/keycodes/keyboard_code_conversion_x.cc
+++ b/ui/events/keycodes/keyboard_code_conversion_x.cc
@@ -476,7 +476,7 @@ KeyboardCode KeyboardCodeFromXKeyEvent(XEvent* xev) {
 
   KeySym keysym = NoSymbol;
   XKeyEvent xkey = xev->xkey;
-  xkey.state &= ~(ShiftMask | Mod1Mask);
+  xkey.state &= (~0xFF | Mod2Mask);  // Clears the xkey's state except numlock.
   // XLookupKeysym does not take into consideration the state of the lock/shift
   // etc. keys. So it is necessary to use XLookupString instead.
   XLookupString(&xkey, NULL, 0, &keysym, NULL);