[headless] Fix screenshots with gpu enabled.

content/browser/compositor/offscreen_browser_compositor_output_surface.h

 // Copyright 2015 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.
 
 #ifndef CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
 #include "content/browser/compositor/browser_compositor_output_surface.h"
+#include "ui/events/latency_info.h"
 
 namespace ui {
 class ContextProviderCommandBuffer;
 }
 
 namespace content {
 class ReflectorTexture;
 
 class OffscreenBrowserCompositorOutputSurface
     : public BrowserCompositorOutputSurface {
@@ skipping 21 matching lines @@
   unsigned GetOverlayTextureId() const override;
   bool SurfaceIsSuspendForRecycle() const override;
   uint32_t GetFramebufferCopyTextureFormat() override;
 
   // BrowserCompositorOutputSurface implementation.
   void OnReflectorChanged() override;
 #if defined(OS_MACOSX)
   void SetSurfaceSuspendedForRecycle(bool suspended) override {};
 #endif
 
-  void OnSwapBuffersComplete();
+  void OnSwapBuffersComplete(const std::vector<ui::LatencyInfo>& latency_info);
 
   cc::OutputSurfaceClient* client_ = nullptr;
   gfx::Size reshape_size_;
   uint32_t fbo_ = 0;
   bool reflector_changed_ = false;
   std::unique_ptr<ReflectorTexture> reflector_texture_;
   base::WeakPtrFactory<OffscreenBrowserCompositorOutputSurface>
       weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OffscreenBrowserCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_OFFSCREEN_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_