content: Add overdraw feedback support for X11 ChromeOS builds.

content/browser/compositor/gpu_browser_compositor_output_surface.h

Index: content/browser/compositor/gpu_browser_compositor_output_surface.h
diff --git a/content/browser/compositor/gpu_browser_compositor_output_surface.h b/content/browser/compositor/gpu_browser_compositor_output_surface.h
index c250526416deafaf5638e3cbc9b11570757d1d98..6e970a0cfd3730326b00e9cb52070df9d5692d88 100644
--- a/content/browser/compositor/gpu_browser_compositor_output_surface.h
+++ b/content/browser/compositor/gpu_browser_compositor_output_surface.h
@@ -40,7 +40,8 @@ class GpuBrowserCompositorOutputSurface
       scoped_refptr<ui::ContextProviderCommandBuffer> context,
       const UpdateVSyncParametersCallback& update_vsync_parameters_callback,
       std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
-          overlay_candidate_validator);
+          overlay_candidate_validator,
+      bool support_stencil);
 
   ~GpuBrowserCompositorOutputSurface() override;