Update from chromium https://crrev.com/301315

cc/trees/thread_proxy.cc

 // Copyright 2011 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 "cc/trees/thread_proxy.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 1287 matching lines @@
     *main_frame_will_happen = false;
   }
   completion->Signal();
 }
 
 void ThreadProxy::RenewTreePriority() {
   DCHECK(IsImplThread());
   bool smoothness_takes_priority =
       impl().layer_tree_host_impl->pinch_gesture_active() ||
       impl().layer_tree_host_impl->page_scale_animation_active() ||
-      impl().layer_tree_host_impl->IsCurrentlyScrolling();
+      impl().layer_tree_host_impl->IsActivelyScrolling();
 
   // Schedule expiration if smoothness currently takes priority.
   if (smoothness_takes_priority)
     impl().smoothness_priority_expiration_notifier.Schedule();
 
   // We use the same priority for both trees by default.
   TreePriority priority = SAME_PRIORITY_FOR_BOTH_TREES;
 
   // Smoothness takes priority if we have an expiration for it scheduled.
   if (impl().smoothness_priority_expiration_notifier.HasPendingNotification())
@@ skipping 54 matching lines @@
 
   impl().timing_history.DidActivateSyncTree();
 }
 
 void ThreadProxy::DidManageTiles() {
   DCHECK(IsImplThread());
   impl().scheduler->DidManageTiles();
 }
 
 }  // namespace cc