Plumbing input event latency reporting through Mus GPU.

services/ui/surfaces/display_output_surface.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 "services/ui/surfaces/display_output_surface.h"
 
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
@@ skipping 61 matching lines @@
                                    bool has_alpha,
                                    bool use_stencil) {
   size_ = size;
   has_set_draw_rectangle_since_last_resize_ = false;
   context_provider()->ContextGL()->ResizeCHROMIUM(
       size.width(), size.height(), device_scale_factor, has_alpha);
 }
 
 void DisplayOutputSurface::SwapBuffers(cc::OutputSurfaceFrame frame) {
   DCHECK(context_provider_);
+
+  if (frame.latency_info.size() > 0)
+    context_provider_->ContextSupport()->AddLatencyInfo(frame.latency_info);
+
   set_draw_rectangle_for_frame_ = false;
   if (frame.sub_buffer_rect) {
     context_provider_->ContextSupport()->PartialSwapBuffers(
         *frame.sub_buffer_rect);
   } else {
     context_provider_->ContextSupport()->Swap();
   }
 }
 
 uint32_t DisplayOutputSurface::GetFramebufferCopyTextureFormat() {
@@ skipping 24 matching lines @@
   return false;
 }
 
 void DisplayOutputSurface::ApplyExternalStencil() {}
 
 void DisplayOutputSurface::DidReceiveSwapBuffersAck(gfx::SwapResult result) {
   client_->DidReceiveSwapBuffersAck();
 }
 
 void DisplayOutputSurface::OnGpuSwapBuffersCompleted(
-    const std::vector<ui::LatencyInfo>& latency_info,
+    const std::vector<LatencyInfo>& latency_info,
     gfx::SwapResult result,
     const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac) {
+  for (const auto& latency : latency_info) {
+    if (latency.latency_components().size() > 0)
+      latency_tracker_.OnGpuSwapBuffersCompleted(latency);
+  }
   DidReceiveSwapBuffersAck(result);
 }
 
 void DisplayOutputSurface::OnVSyncParametersUpdated(base::TimeTicks timebase,
                                                     base::TimeDelta interval) {
   // TODO(brianderson): We should not be receiving 0 intervals.
   synthetic_begin_frame_source_->OnUpdateVSyncParameters(
       timebase,
       interval.is_zero() ? cc::BeginFrameArgs::DefaultInterval() : interval);
 }
 
 }  // namespace ui