Convert additional ozone/drm callbacks to OnceCallback

ui/ozone/platform/drm/gpu/page_flip_request.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/ozone/platform/drm/gpu/page_flip_request.h"
 
 namespace ui {
 
 PageFlipRequest::PageFlipRequest(int crtc_count,
-                                 const SwapCompletionCallback& callback)
-    : callback_(callback), crtc_count_(crtc_count) {
-}
+                                 SwapCompletionOnceCallback callback)
+    : callback_(std::move(callback)), crtc_count_(crtc_count) {}
 
 PageFlipRequest::~PageFlipRequest() {
 }
 
 void PageFlipRequest::Signal(gfx::SwapResult result) {
   if (result == gfx::SwapResult::SWAP_FAILED)
     result_ = gfx::SwapResult::SWAP_FAILED;
   else if (result != gfx::SwapResult::SWAP_ACK)
     result_ = result;
 
   if (!--crtc_count_) {
-    callback_.Run(result_);
-    callback_.Reset();
+    std::move(callback_).Run(result_);
   }
 }
 
 }  // namespace ui