Part 10 of cc/ directory shuffles: layers

cc/contents_scaling_layer.h

-// Copyright 2012 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_CONTENTS_SCALING_LAYER_H_
-#define CC_CONTENTS_SCALING_LAYER_H_
-
-#include "cc/base/cc_export.h"
-#include "cc/layer.h"
-
-namespace cc {
-
-// Base class for layers that need contents scale.
-// The content bounds are determined by bounds and scale of the contents.
-class CC_EXPORT ContentsScalingLayer : public Layer {
- public:
-  virtual void CalculateContentsScale(
-      float ideal_contents_scale,
-      bool animating_transform_to_screen,
-      float* contents_scale_x,
-      float* contents_scale_y,
-      gfx::Size* content_bounds) OVERRIDE;
-
-  virtual void Update(
-    ResourceUpdateQueue* queue,
-    const OcclusionTracker* occlusion,
-    RenderingStats* stats) OVERRIDE;
-
- protected:
-  ContentsScalingLayer();
-  virtual ~ContentsScalingLayer();
-
-  gfx::Size ComputeContentBoundsForScale(float scale_x, float scale_y) const;
-
- private:
-  float last_update_contents_scale_x_;
-  float last_update_contents_scale_y_;
-};
-
-}  // namespace cc
-
-#endif  // CC_CONTENTS_SCALING_LAYER_H__