MacViews: Fix MenuRunnerTest.NonLatinMnemonic

ui/events/test/cocoa_test_event_utils.mm

Index: ui/events/test/cocoa_test_event_utils.mm
diff --git a/ui/events/test/cocoa_test_event_utils.mm b/ui/events/test/cocoa_test_event_utils.mm
index 6c7819f8f1a486809f3f04c43479d235949cc249..9810d589419b6f6a1f2ebd1b6d01313e80cef5c5 100644
--- a/ui/events/test/cocoa_test_event_utils.mm
+++ b/ui/events/test/cocoa_test_event_utils.mm
@@ -190,7 +190,8 @@ NSTimeInterval TimeIntervalSinceSystemStartup() {
 NSEvent* SynthesizeKeyEvent(NSWindow* window,
                             bool keyDown,
                             ui::KeyboardCode keycode,
-                            NSUInteger flags) {
+                            NSUInteger flags,
+                            ui::DomKey dom_key) {
   // If caps lock is set for an alpha keycode, treat it as if shift was pressed.
   // Note on Mac (unlike other platforms) shift while caps is down does not go
   // back to lowercase.
@@ -210,6 +211,11 @@ NSEvent* SynthesizeKeyEvent(NSWindow* window,
   if (macKeycode < 0)
     return nil;
 
+  // If an explicit unicode character is provided, use that instead of the one
+  // derived from the keycode.
+  if (dom_key.IsCharacter())
+    shifted_character = dom_key.ToCharacter();
+
   // Note that, in line with AppKit's documentation (and tracing "real" events),
   // -[NSEvent charactersIngoringModifiers]" are "the characters generated by
   // the receiving key event as if no modifier key (except for Shift)".