Remove current implementation of frame timing events.

cc/trees/layer_tree_impl.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/layer_tree_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 101 matching lines @@
 }
 
 void LayerTreeImpl::RecreateResources() {
   if (root_layer_) {
     LayerTreeHostCommon::CallFunctionForEveryLayer(
         this, [](LayerImpl* layer) { layer->RecreateResources(); },
         CallFunctionLayerType::ALL_LAYERS);
   }
 }
 
-void LayerTreeImpl::GatherFrameTimingRequestIds(
-    std::vector<int64_t>* request_ids) {
-  if (!root_layer_)
-    return;
-
-  // TODO(vmpstr): Early out if there are no requests on any of the layers. For
-  // that, we need to inform LayerTreeImpl whenever there are requests when we
-  // get them.
-  LayerTreeHostCommon::CallFunctionForEveryLayer(
-      this,
-      [request_ids](LayerImpl* layer) {
-        layer->GatherFrameTimingRequestIds(request_ids);
-      },
-      CallFunctionLayerType::ALL_LAYERS);
-}
-
 bool LayerTreeImpl::IsViewportLayerId(int id) const {
   if (id == inner_viewport_scroll_layer_id_ ||
       id == outer_viewport_scroll_layer_id_)
     return true;
   if (InnerViewportContainerLayer() &&
       id == InnerViewportContainerLayer()->id())
     return true;
   if (OuterViewportContainerLayer() &&
       id == OuterViewportContainerLayer()->id())
     return true;
@@ skipping 1949 matching lines @@
 }
 
 void LayerTreeImpl::ResetAllChangeTracking(PropertyTrees::ResetFlags flag) {
   layers_that_should_push_properties_.clear();
   for (auto* layer : *this)
     layer->ResetChangeTracking();
   property_trees_.ResetAllChangeTracking(flag);
 }
 
 }  // namespace cc