Add initial SHM-only Wayland Ozone implementation

ui/ozone/platform/wayland/wayland_window.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 UI_OZONE_PLATFORM_WAYLAND_WAYLAND_WINDOW_H_
+#define UI_OZONE_PLATFORM_WAYLAND_WAYLAND_WINDOW_H_
+
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/ozone/platform/wayland/wayland_object.h"
+#include "ui/platform_window/platform_window.h"
+
+namespace ui {
+
+class WaylandDisplay;
+
+class WaylandWindow : public PlatformWindow {
+ public:
+  WaylandWindow(PlatformWindowDelegate* delegate,
+                WaylandDisplay* display,
+                const gfx::Rect& bounds);
+  ~WaylandWindow() override;
+
+  bool Initialize();
+
+  wl_surface* GetSurface();
+  gfx::AcceleratedWidget GetWidget();
+
+  void ApplyPendingBounds();

[spang, 2016/01/25 18:57:58]

It would be nice to comment these.

[Michael Forney, 2016/01/26 02:25:26]

Done.

+  void SetKeyboardFocus(bool focus);
+  void SetPointerFocus(bool focus);
+
+  // PlatformWindow
+  void Show() override;
+  void Hide() override;
+  void Close() override;
+  void SetBounds(const gfx::Rect& bounds) override;
+  gfx::Rect GetBounds() override;
+  void SetTitle(const base::string16& title) override;
+  void SetCapture() override;
+  void ReleaseCapture() override;
+  void ToggleFullscreen() override;
+  void Maximize() override;
+  void Minimize() override;
+  void Restore() override;
+  void SetCursor(PlatformCursor cursor) override;
+  void MoveCursorTo(const gfx::Point& location) override;
+  void ConfineCursorToBounds(const gfx::Rect& bounds) override;
+  PlatformImeController* GetPlatformImeController() override;
+
+  // xdg_surface_listener
+  static void Configure(void* data,
+                        xdg_surface* obj,
+                        int32_t width,
+                        int32_t height,
+                        wl_array* states,
+                        uint32_t serial);
+  static void Close(void* data, xdg_surface* obj);
+
+ private:
+  PlatformWindowDelegate* delegate_;
+  WaylandDisplay* display_;
+
+  wl::Object<wl_surface> surface_;
+  wl::Object<xdg_surface> xdg_surface_;

[spang, 2016/01/25 18:57:58]

What's the difference between these two things?

[Michael Forney, 2016/01/25 19:16:45]

The wl_surface is a generic surface object that is used for normal windows,
cursors, drag-and-drop surfaces and more. Creating a wl_surface alone will have
no actual effect until you assign it a "role".

Assigning the xdg_surface role causes it to appear as a top-level window and
allows you to do desktop-y things like maximize/minimize/fullscreen/set
title/interactive resize.

+
+  gfx::Rect bounds_, pending_bounds_;

[spang, 2016/01/25 18:57:57]

Just one declaration per line.

[Michael Forney, 2016/01/26 02:25:26]

Done.

+  uint32_t pending_configure_serial_;
+
+  DISALLOW_COPY_AND_ASSIGN(WaylandWindow);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_WAYLAND_WAYLAND_WINDOW_H_