Introducing SurfaceReferenceFactory

cc/surfaces/surface_info.h

+// Copyright 2016 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_SURFACES_SURFACE_INFO_H_
+#define CC_SURFACES_SURFACE_INFO_H_
+
+#include "cc/surfaces/surface_id.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace cc {
+
+// This class contains information about the surface that is being embedded.
+class SurfaceInfo {
+ public:
+  SurfaceInfo() = default;
+  SurfaceInfo(const SurfaceId& id,
+              float device_scale_factor,
+              const gfx::Size& size_in_pixels)
+      : id_(id),
+        device_scale_factor_(device_scale_factor),
+        size_in_pixels_(size_in_pixels) {}
+
+  bool operator==(const SurfaceInfo& info) const {
+    return id_ == info.id() &&
+           device_scale_factor_ == info.device_scale_factor() &&
+           size_in_pixels_ == info.size_in_pixels();
+  }
+
+  bool operator!=(const SurfaceInfo& info) const { return !(*this == info); }
+
+  const SurfaceId& id() const { return id_; }
+  float device_scale_factor() const { return device_scale_factor_; }
+  const gfx::Size& size_in_pixels() const { return size_in_pixels_; }
+
+ private:
+  SurfaceId id_;
+  float device_scale_factor_ = 1.f;
+  gfx::Size size_in_pixels_;
+};
+
+}  // namespace cc
+
+#endif  // CC_SURFACES_SURFACE_INFO_H_