exo: Implement Surface::SetSurfaceLayerContents

components/exo/surface.cc

 // 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.
 
 #include "components/exo/surface.h"
 
 #include <utility>
 
 #include "base/callback_helpers.h"
 #include "base/logging.h"
@@ skipping 863 matching lines @@
   layer->SetTextureFlipped(false);
   layer->SetTextureCrop(crop_);
   layer->SetTextureScale(static_cast<float>(texture_size_in_dip_.width()) /
                              layer->bounds().width(),
                          static_cast<float>(texture_size_in_dip_.height()) /
                              layer->bounds().height());
   layer->SetTextureAlpha(alpha_);
 }
 
 void Surface::SetSurfaceLayerContents(ui::Layer* layer) {
-  // TODO(jbauman): Implement this.
-  NOTIMPLEMENTED();
+  if (surface_id_.is_null())
+    return;
+
+  gfx::Size layer_size = layer->bounds().size();
+  float contents_surface_to_layer_scale = 1.0f;
+
+  layer->SetShowSurface(
+      surface_id_,
+      base::Bind(&SatisfyCallback, base::Unretained(surface_manager_)),
+      base::Bind(&RequireCallback, base::Unretained(surface_manager_)),
+      layer_size, contents_surface_to_layer_scale, layer_size);
 }
 
 bool Surface::use_surface_layer_ = false;
 
 }  // namespace exo