Split the event library into a cross-platform and native part. Part 1.

ui/events/events_stub.cc

Index: ui/events/events_stub.cc
diff --git a/ui/events/events_stub.cc b/ui/events/events_stub.cc
index 5c8397400a5d4e4e64979a931d4a1ce8ff7748c7..39274f6386ae3f9c4a2dab617cacf5fff0aa304d 100644
--- a/ui/events/events_stub.cc
+++ b/ui/events/events_stub.cc
@@ -60,15 +60,6 @@ gfx::Vector2d GetMouseWheelOffset(const base::NativeEvent& native_event) {
   return gfx::Vector2d();
 }
 
-base::NativeEvent CopyNativeEvent(const base::NativeEvent& event) {
-  NOTIMPLEMENTED() <<
-      "Don't know how to copy base::NativeEvent for this platform";
-  return NULL;
-}
-
-void ReleaseCopiedNativeEvent(const base::NativeEvent& event) {
-}
-
 void IncrementTouchIdRefCount(const base::NativeEvent& native_event) {
   NOTIMPLEMENTED();
 }