Pointer watcher modifications to support laser pointer.

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 254b52b14ab110750b329684b314f92821d00fc4..23c696081228642046ff02656610464cf9b97f28 100644
--- a/ash/mus/bridge/wm_shell_mus.cc
+++ b/ash/mus/bridge/wm_shell_mus.cc
@@ -357,7 +357,8 @@ void WmShellMus::RemoveDisplayObserver(WmDisplayObserver* observer) {
   NOTIMPLEMENTED();
 }
 
-void WmShellMus::AddPointerWatcher(views::PointerWatcher* watcher) {
+void WmShellMus::AddPointerWatcher(views::PointerWatcher* watcher,
+                                   bool wants_moves /* = false*/) {
   // TODO(jamescook): Move PointerWatcherDelegateMus to //ash/mus and use here.
   NOTIMPLEMENTED();
 }