Create a new action triggered when a BeginMainFrame is not expected before vsync

ui/compositor/compositor.cc

 // Copyright (c) 2012 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/compositor/compositor.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <deque>
@@ skipping 450 matching lines @@
   DCHECK(!IsLocked());
   for (auto& observer : animation_observer_list_)
     observer.OnAnimationStep(args.frame_time);
   if (animation_observer_list_.might_have_observers())
     host_->SetNeedsAnimate();
 }
 
 void Compositor::BeginMainFrameNotExpectedSoon() {
 }
 
+void Compositor::BeginMainFrameNotExpectedUntil(base::TimeTicks time) {}
+
 static void SendDamagedRectsRecursive(ui::Layer* layer) {
   layer->SendDamagedRects();
   for (auto* child : layer->children())
     SendDamagedRectsRecursive(child);
 }
 
 void Compositor::UpdateLayerTreeHost() {
   if (!root_layer())
     return;
   SendDamagedRectsRecursive(root_layer());
@@ skipping 89 matching lines @@
 void Compositor::TimeoutLocks() {
   // Make a copy, we're going to cause |active_locks_| to become
   // empty.
   std::vector<CompositorLock*> locks = active_locks_;
   for (auto* lock : locks)
     lock->TimeoutLock();
   DCHECK(active_locks_.empty());
 }
 
 }  // namespace ui