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

ui/base/events/event_dispatcher_unittest.cc

Index: ui/base/events/event_dispatcher_unittest.cc
diff --git a/ui/base/events/event_dispatcher_unittest.cc b/ui/base/events/event_dispatcher_unittest.cc
index 1cc8ba67fc23475100c5679d4a2187ce690c03f4..41eed0952d7f8be927f192939a7058c9c1cdd6ff 100644
--- a/ui/base/events/event_dispatcher_unittest.cc
+++ b/ui/base/events/event_dispatcher_unittest.cc
@@ -80,9 +80,9 @@ class TestEventHandler : public EventHandler {
 
  private:
   // Overridden from EventHandler:
-  virtual EventResult OnKeyEvent(KeyEvent* event) OVERRIDE {
+  virtual void OnKeyEvent(KeyEvent* event) OVERRIDE {
     ReceivedEvent(event);
-    return event_result_;
+    SetStatusOnEvent(event);
   }
 
   virtual EventResult OnMouseEvent(MouseEvent* event) OVERRIDE {