events: Update key-event handlers to not return EventResult.

ui/views/widget/root_view.h

Index: ui/views/widget/root_view.h
diff --git a/ui/views/widget/root_view.h b/ui/views/widget/root_view.h
index 1ee1b26099d4c042561d1ab1d5336a2043eb9ce6..e8be22752a453d5c10a6985f158d8b79b9e1f1b8 100644
--- a/ui/views/widget/root_view.h
+++ b/ui/views/widget/root_view.h
@@ -61,7 +61,7 @@ class VIEWS_EXPORT RootView : public View, public FocusTraversable {
   // Process a key event. Send the event to the focused view and up the focus
   // path, and finally to the default keyboard handler, until someone consumes
   // it. Returns whether anyone consumed the event.
-  ui::EventResult DispatchKeyEvent(const ui::KeyEvent& event);
+  void DispatchKeyEvent(ui::KeyEvent* event);
   void DispatchScrollEvent(ui::ScrollEvent* event);
   void DispatchTouchEvent(ui::TouchEvent* event);
   virtual void DispatchGestureEvent(ui::GestureEvent* event);