Move chromeos::EventRewriter to //ui/chromeos/events

ash/sticky_keys/sticky_keys_overlay_unittest.cc

Index: ash/sticky_keys/sticky_keys_overlay_unittest.cc
diff --git a/ash/sticky_keys/sticky_keys_overlay_unittest.cc b/ash/sticky_keys/sticky_keys_overlay_unittest.cc
index ddede546736aaa4676eaa068280b64b44cd70439..8cf6781222e19effc6c7e11b5bea9f3775835af3 100644
--- a/ash/sticky_keys/sticky_keys_overlay_unittest.cc
+++ b/ash/sticky_keys/sticky_keys_overlay_unittest.cc
@@ -88,7 +88,7 @@ TEST_F(StickyKeysOverlayTest, OverlayNotDestroyedAfterDisplayRemoved) {
             overlay.GetModifierKeyState(ui::EF_SHIFT_DOWN));
 }
 
-// Additional sticky key overlay tests that depend on chromeos::EventRewriter
+// Additional sticky key overlay tests that depend on ui::EventRewriterChromeOS
 // are now in chrome/browser/chromeos/events/event_rewriter_unittest.cc .
 
 }  // namespace ash