Revert "Delete CC."

cc/resources/texture_mailbox.h

+// Copyright 2013 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_RESOURCES_TEXTURE_MAILBOX_H_
+#define CC_RESOURCES_TEXTURE_MAILBOX_H_
+
+#include <string>
+
+#include "base/memory/shared_memory.h"
+#include "gpu/command_buffer/common/mailbox_holder.h"
+#include "ui/gfx/geometry/size.h"
+
+namespace cc {
+class SharedBitmap;
+
+// TODO(skaslev, danakj) Rename this class more apropriately since now it
+// can hold a shared memory resource as well as a texture mailbox.
+class TextureMailbox {
+ public:
+  TextureMailbox();
+  explicit TextureMailbox(const gpu::MailboxHolder& mailbox_holder);
+  TextureMailbox(const gpu::Mailbox& mailbox, uint32 target, uint32 sync_point);
+  TextureMailbox(SharedBitmap* shared_bitmap, const gfx::Size& size);
+
+  ~TextureMailbox();
+
+  bool IsValid() const { return IsTexture() || IsSharedMemory(); }
+  bool IsTexture() const { return !mailbox_holder_.mailbox.IsZero(); }
+  bool IsSharedMemory() const { return shared_bitmap_ != NULL; }
+
+  bool Equals(const TextureMailbox&) const;
+
+  const gpu::Mailbox& mailbox() const { return mailbox_holder_.mailbox; }
+  const int8* name() const { return mailbox().name; }
+  uint32 target() const { return mailbox_holder_.texture_target; }
+  uint32 sync_point() const { return mailbox_holder_.sync_point; }
+  void set_sync_point(int32 sync_point) {
+    mailbox_holder_.sync_point = sync_point;
+  }
+
+  bool allow_overlay() const { return allow_overlay_; }
+  void set_allow_overlay(bool allow_overlay) { allow_overlay_ = allow_overlay; }
+  bool nearest_neighbor() const { return nearest_neighbor_; }
+  void set_nearest_neighbor(bool nearest_neighbor) {
+    nearest_neighbor_ = nearest_neighbor;
+  }
+
+  SharedBitmap* shared_bitmap() const { return shared_bitmap_; }
+  gfx::Size shared_memory_size() const { return shared_memory_size_; }
+  size_t SharedMemorySizeInBytes() const;
+
+ private:
+  gpu::MailboxHolder mailbox_holder_;
+  SharedBitmap* shared_bitmap_;
+  gfx::Size shared_memory_size_;
+  bool allow_overlay_;
+  bool nearest_neighbor_;
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_TEXTURE_MAILBOX_H_