events: Make platform specific events code into ui/events/.

ui/aura/test/event_generator.cc

Index: ui/aura/test/event_generator.cc
diff --git a/ui/aura/test/event_generator.cc b/ui/aura/test/event_generator.cc
index ba8392d0a864eb0adc51746c1c2c034ebcae4769..ac46df1f4a718bd7188b312c516ef15f841fa9b7 100644
--- a/ui/aura/test/event_generator.cc
+++ b/ui/aura/test/event_generator.cc
@@ -448,13 +448,7 @@ void EventGenerator::DispatchKeyEvent(bool is_press,
   TestKeyEvent keyev(native_event, flags, key_press == WM_CHAR);
 #else
   ui::EventType type = is_press ? ui::ET_KEY_PRESSED : ui::ET_KEY_RELEASED;
-#if defined(USE_X11)
-  scoped_ptr<XEvent> native_event(new XEvent);
-  ui::InitXKeyEventForTesting(type, key_code, flags, native_event.get());
-  TestKeyEvent keyev(native_event.get(), flags, false);
-#else
   ui::KeyEvent keyev(type, key_code, flags, false);
-#endif  // USE_X11
 #endif  // OS_WIN
   Dispatch(&keyev);
 }