SetPreviousFrameSurface should copy latency info to the new surface

content/browser/renderer_host/delegated_frame_host.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 "content/browser/renderer_host/delegated_frame_host.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 439 matching lines @@
     ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
     cc::SurfaceManager* manager =
         factory->GetContextFactoryPrivate()->GetSurfaceManager();
     bool allocated_new_local_surface_id = false;
     if (!local_surface_id_.is_valid() || frame_size != current_surface_size_ ||
         frame_size_in_dip != current_frame_size_in_dip_) {
       local_surface_id_ = id_allocator_->GenerateId();
       allocated_new_local_surface_id = true;
     }
 
-    gfx::Size desired_size = client_->DelegatedFrameHostDesiredSizeInDIP();
-    if (desired_size != frame_size_in_dip && !desired_size.IsEmpty()) {
-      skipped_latency_info_list_.insert(skipped_latency_info_list_.end(),
-                                        frame.metadata.latency_info.begin(),
-                                        frame.metadata.latency_info.end());
-      frame.metadata.latency_info.clear();
-    } else {
-      frame.metadata.latency_info.insert(frame.metadata.latency_info.end(),
-                                         skipped_latency_info_list_.begin(),
-                                         skipped_latency_info_list_.end());
-      skipped_latency_info_list_.clear();
-    }
+    frame.metadata.latency_info.insert(frame.metadata.latency_info.end(),
+                                       skipped_latency_info_list_.begin(),
+                                       skipped_latency_info_list_.end());
+    skipped_latency_info_list_.clear();
 
     support_->SubmitCompositorFrame(local_surface_id_, std::move(frame));
 
     if (allocated_new_local_surface_id) {
       // manager must outlive compositors using it.
       cc::SurfaceId surface_id(frame_sink_id_, local_surface_id_);
       cc::SurfaceInfo surface_info(surface_id, frame_device_scale_factor,
                                    frame_size);
       client_->DelegatedFrameHostGetLayer()->SetShowPrimarySurface(
           surface_info, manager->reference_factory());
@@ skipping 376 matching lines @@
 
 void DelegatedFrameHost::ResetCompositorFrameSinkSupport() {
   if (!support_)
     return;
   if (compositor_)
     compositor_->RemoveFrameSink(frame_sink_id_);
   support_.reset();
 }
 
 }  // namespace content