Use OnceCallback on Mojo interfaces in //ash

ash/wm/session_state_animator.cc

Index: ash/wm/session_state_animator.cc
diff --git a/ash/wm/session_state_animator.cc b/ash/wm/session_state_animator.cc
index 60a822554e6a5dbd03d2685160c5de2702473251..d453cf74930c0624721329f5542c933e01f22ca7 100644
--- a/ash/wm/session_state_animator.cc
+++ b/ash/wm/session_state_animator.cc
@@ -4,6 +4,8 @@
 
 #include "ash/wm/session_state_animator.h"
 
+#include <utility>
+
 #include "ash/ash_switches.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/shell.h"
@@ -38,11 +40,11 @@ const int SessionStateAnimator::kAllNonRootContainersMask =
     SessionStateAnimator::NON_LOCK_SCREEN_CONTAINERS;
 
 SessionStateAnimator::AnimationSequence::AnimationSequence(
-    base::Closure callback)
+    base::OnceClosure callback)
     : sequence_ended_(false),
       animation_completed_(false),
       invoke_callback_(false),
-      callback_(callback) {}
+      callback_(std::move(callback)) {}
 
 SessionStateAnimator::AnimationSequence::~AnimationSequence() {}
 
@@ -66,7 +68,7 @@ void SessionStateAnimator::AnimationSequence::OnAnimationAborted() {
 void SessionStateAnimator::AnimationSequence::CleanupIfSequenceCompleted() {
   if (sequence_ended_ && animation_completed_) {
     if (invoke_callback_)
-      callback_.Run();
+      std::move(callback_).Run();
     delete this;
   }
 }