Adding a Wayland basic toolkit

ui/wayland/wayland_shm_buffer.h

Index: ui/wayland/wayland_shm_buffer.h
diff --git a/ui/wayland/wayland_shm_buffer.h b/ui/wayland/wayland_shm_buffer.h
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+++ b/ui/wayland/wayland_shm_buffer.h
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+// Copyright (c) 2011 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 UI_WAYLAND_WAYLAND_SHM_BUFFER_H_
+#define UI_WAYLAND_WAYLAND_SHM_BUFFER_H_
+
+#include <stdint.h>
+
+#include "base/basictypes.h"
+#include "ui/wayland/wayland_buffer.h"
+
+typedef struct _cairo_surface cairo_surface_t;
+
+namespace ui {
+
+class WaylandDisplay;
+
+// A SHM implementation for the WaylandBuffer.
+class WaylandShmBuffer : public WaylandBuffer {
+ public:
+  // Creates a Wayland buffer with the given width and height.
+  WaylandShmBuffer(WaylandDisplay* display, uint32_t width, uint32_t height);
+  virtual ~WaylandShmBuffer();
+
+  // Returns a pointer to the surface associated with the buffer.
+  // This object maintains ownership of the surface.
+  cairo_surface_t* data_surface() const { return data_surface_; }
+
+ private:
+  // The surface associated with the Wayland buffer.
+  cairo_surface_t* data_surface_;
+
+  DISALLOW_COPY_AND_ASSIGN(WaylandShmBuffer);
+};
+
+}  // namespace ui
+
+#endif  // UI_WAYLAND_WAYLAND_SHM_BUFFER_H_