Wires up drags to pointer watcher adapter.

ash/mus/bridge/wm_shell_mus.cc

Index: ash/mus/bridge/wm_shell_mus.cc
diff --git a/ash/mus/bridge/wm_shell_mus.cc b/ash/mus/bridge/wm_shell_mus.cc
index e2eb353e1b57e430b3afc5446e339fd99e6daf00..82f779ec73ddf1e4aed5b2ee2eab280f9fbab5ff 100644
--- a/ash/mus/bridge/wm_shell_mus.cc
+++ b/ash/mus/bridge/wm_shell_mus.cc
@@ -374,7 +374,10 @@ void WmShellMus::RemoveDisplayObserver(WmDisplayObserver* observer) {
 }
 
 void WmShellMus::AddPointerWatcher(views::PointerWatcher* watcher,
-                                   bool wants_moves) {
+                                   views::RequestedEvents events) {
+  // TODO: implement drags for mus pointer watcher, http://crbug.com/641164.
+  // NOTIMPLEMENTED drags for mus pointer watcher.
+  const bool wants_moves = events == views::RequestedEvents::MOVES;
   pointer_watcher_event_router_->AddPointerWatcher(watcher, wants_moves);
 }