Remove parts of //cc we aren't using

cc/layers/surface_layer.h

Index: cc/layers/surface_layer.h
diff --git a/cc/layers/surface_layer.h b/cc/layers/surface_layer.h
deleted file mode 100644
index 381369f5c615457831b7ae8014352d68e916bd3a..0000000000000000000000000000000000000000
--- a/cc/layers/surface_layer.h
+++ /dev/null
@@ -1,66 +0,0 @@
-// 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.
-
-#ifndef CC_LAYERS_SURFACE_LAYER_H_
-#define CC_LAYERS_SURFACE_LAYER_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/layers/layer.h"
-#include "cc/surfaces/surface_id.h"
-#include "cc/surfaces/surface_sequence.h"
-#include "ui/gfx/geometry/size.h"
-
-namespace cc {
-
-// A layer that renders a surface referencing the output of another compositor
-// instance or client.
-class CC_EXPORT SurfaceLayer : public Layer {
- public:
-  // This callback is run when a SurfaceSequence needs to be satisfied, but
-  // the parent compositor is unable to. It can be called on either the main
-  // or impl threads.
-  using SatisfyCallback = base::Callback<void(SurfaceSequence)>;
-
-  // This callback is run to require that a specific SurfaceSequence is
-  // received before a SurfaceId is destroyed.
-  using RequireCallback = base::Callback<void(SurfaceId, SurfaceSequence)>;
-
-  static scoped_refptr<SurfaceLayer> Create(
-      const SatisfyCallback& satisfy_callback,
-      const RequireCallback& require_callback);
-
-  void SetSurfaceId(SurfaceId surface_id, float scale, const gfx::Size& size);
-
-  // Layer overrides.
-  scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
-  void SetLayerTreeHost(LayerTreeHost* host) override;
-  void PushPropertiesTo(LayerImpl* layer) override;
-  void CalculateContentsScale(float ideal_contents_scale,
-                              float* contents_scale_x,
-                              float* contents_scale_y,
-                              gfx::Size* content_bounds) override;
-
- protected:
-  SurfaceLayer(const SatisfyCallback& satisfy_callback,
-               const RequireCallback& require_callback);
-  bool HasDrawableContent() const override;
-
- private:
-  ~SurfaceLayer() override;
-  void CreateNewDestroySequence();
-  void SatisfyDestroySequence();
-
-  SurfaceId surface_id_;
-  gfx::Size surface_size_;
-  float surface_scale_;
-  SurfaceSequence destroy_sequence_;
-  SatisfyCallback satisfy_callback_;
-  RequireCallback require_callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(SurfaceLayer);
-};
-
-}  // namespace cc
-
-#endif  // CC_LAYERS_SURFACE_LAYER_H_