[WIP] Make content_shell run under Wayland

ui/views/widget/desktop_aura/desktop_window_tree_host_wayland.h

Index: ui/views/widget/desktop_aura/desktop_window_tree_host_wayland.h
diff --git a/ui/views/widget/desktop_aura/desktop_window_tree_host_wayland.h b/ui/views/widget/desktop_aura/desktop_window_tree_host_wayland.h
new file mode 100644
index 0000000000000000000000000000000000000000..ebcab3e02b86bf16dc8a51fdbf9efc5611c59657
--- /dev/null
+++ b/ui/views/widget/desktop_aura/desktop_window_tree_host_wayland.h
@@ -0,0 +1,193 @@
+// 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_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WAYLAND_H_
+#define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WAYLAND_H_
+
+#include <list>
+#include <set>
+#include <string>
+#include <vector>
+
+#include "base/macros.h"
+#include "ui/aura/window_tree_host.h"
+#include "ui/platform_window/platform_window.h"
+#include "ui/platform_window/platform_window_delegate.h"
+#include "ui/views/widget/desktop_aura/desktop_window_tree_host.h"
+
+namespace views {
+
+namespace corewm {
+class Tooltip;
+}
+
+class DesktopDragDropClientWayland;
+
+class VIEWS_EXPORT DesktopWindowTreeHostWayland
+    : public DesktopWindowTreeHost,
+      public aura::WindowTreeHost,
+      public ui::PlatformWindowDelegate {
+ public:
+  DesktopWindowTreeHostWayland(
+      internal::NativeWidgetDelegate* native_widget_delegate,
+      DesktopNativeWidgetAura* desktop_native_widget_aura);
+  ~DesktopWindowTreeHostWayland() override;
+
+  // Deallocates the internal list of open windows.
+  static void CleanUpWindowList();
+
+  // Returns window bounds. This is used by Screen to determine if a point
+  // belongs to a particular window.
+  gfx::Rect GetBoundsInScreen() const;
+
+ protected:
+  // Overridden from DesktopWindowTreeHost:
+  void Init(aura::Window* content_window,
+            const views::Widget::InitParams& params) override;
+  void OnNativeWidgetCreated(const views::Widget::InitParams& params) override;
+  std::unique_ptr<corewm::Tooltip> CreateTooltip() override;
+  std::unique_ptr<aura::client::DragDropClient> CreateDragDropClient(
+      DesktopNativeCursorManager* cursor_manager) override;
+  void Close() override;
+  void CloseNow() override;
+  aura::WindowTreeHost* AsWindowTreeHost() override;
+  void ShowWindowWithState(ui::WindowShowState show_state) override;
+  void ShowMaximizedWithBounds(const gfx::Rect& restored_bounds) override;
+  bool IsVisible() const override;
+  void SetSize(const gfx::Size& size) override;
+  void StackAbove(aura::Window* window) override;
+  void StackAtTop() override;
+  void CenterWindow(const gfx::Size& size) override;
+  void GetWindowPlacement(gfx::Rect* bounds,
+                          ui::WindowShowState* show_state) const override;
+  gfx::Rect GetWindowBoundsInScreen() const override;
+  gfx::Rect GetClientAreaBoundsInScreen() const override;
+  gfx::Rect GetRestoredBounds() const override;
+  std::string GetWorkspace() const override;
+  gfx::Rect GetWorkAreaBoundsInScreen() const override;
+  void SetShape(SkRegion* native_region) override;
+  void Activate() override;
+  void Deactivate() override;
+  bool IsActive() const override;
+  void Maximize() override;
+  void Minimize() override;
+  void Restore() override;
+  bool IsMaximized() const override;
+  bool IsMinimized() const override;
+  bool HasCapture() const override;
+  void SetAlwaysOnTop(bool always_on_top) override;
+  bool IsAlwaysOnTop() const override;
+  void SetVisibleOnAllWorkspaces(bool always_visible) override;
+  bool SetWindowTitle(const base::string16& title) override;
+  void ClearNativeFocus() override;
+  views::Widget::MoveLoopResult RunMoveLoop(
+      const gfx::Vector2d& drag_offset,
+      views::Widget::MoveLoopSource source,
+      views::Widget::MoveLoopEscapeBehavior escape_behavior) override;
+  void EndMoveLoop() override;
+  void SetVisibilityChangedAnimationsEnabled(bool value) override;
+  bool ShouldUseNativeFrame() const override;
+  bool ShouldWindowContentsBeTransparent() const override;
+  void FrameTypeChanged() override;
+  void SetFullscreen(bool fullscreen) override;
+  bool IsFullscreen() const override;
+  void SetOpacity(float opacity) override;
+  void SetWindowIcons(const gfx::ImageSkia& window_icon,
+                      const gfx::ImageSkia& app_icon) override;
+  void InitModalType(ui::ModalType modal_type) override;
+  void FlashFrame(bool flash_frame) override;
+  void OnRootViewLayout() override;
+  void OnNativeWidgetFocus() override;
+  void OnNativeWidgetBlur() override;
+  bool IsAnimatingClosed() const override;
+  bool IsTranslucentWindowOpacitySupported() const override;
+  void SizeConstraintsChanged() override;
+
+  // Overridden from aura::WindowTreeHost:
+  gfx::Transform GetRootTransform() const override;
+  ui::EventSource* GetEventSource() override;
+  gfx::AcceleratedWidget GetAcceleratedWidget() override;
+  void ShowImpl() override;
+  void HideImpl() override;
+  gfx::Rect GetBounds() const override;
+  void SetBounds(const gfx::Rect& bounds) override;
+  gfx::Point GetLocationOnNativeScreen() const override;
+  void SetCapture() override;
+  void ReleaseCapture() override;
+  void SetCursorNative(gfx::NativeCursor cursor) override;
+  void MoveCursorToNative(const gfx::Point& location) override;
+  void OnCursorVisibilityChangedNative(bool show) override;
+
+  // Overridden from ui::PlatformWindowDelegate:
+  void OnBoundsChanged(const gfx::Rect&) override;
+  void OnDamageRect(const gfx::Rect& damaged_region) override;
+  void DispatchEvent(ui::Event* event) override;
+  void OnCloseRequest() override;
+  void OnClosed() override;
+  void OnWindowStateChanged(ui::PlatformWindowState new_state) override;
+  void OnLostCapture() override;
+  void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget,
+                                    float device_pixel_ratio) override;
+  void OnAcceleratedWidgetDestroyed() override;
+  void OnActivationChanged(bool active) override;
+
+ private:
+  enum {
+    Uninitialized = 0x00,
+    Visible = 0x01,  // Window is Visible.
+    FullScreen = 0x02,  // Window is in fullscreen mode.
+    Maximized = 0x04,  // Window is maximized,
+    Minimized = 0x08,  // Window is minimized.
+    Active = 0x10  // Window is Active.
+  };
+
+  typedef unsigned RootWindowState;
+
+  void Relayout();
+  gfx::Size AdjustSize(const gfx::Size& requested_size);
+  void ShowWindow();
+
+  static std::list<gfx::AcceleratedWidget>& open_windows();
+  gfx::Rect ToDIPRect(const gfx::Rect& rect_in_pixels) const;
+  gfx::Rect ToPixelRect(const gfx::Rect& rect_in_dip) const;
+  void ResetWindowRegion();
+
+  RootWindowState state_;
+  bool has_capture_;
+  bool custom_window_shape_;
+  bool always_on_top_;
+
+  // Original bounds of DRWH.
+  gfx::Rect previous_bounds_;
+  gfx::Rect previous_maximize_bounds_;
+  gfx::AcceleratedWidget window_;
+  base::string16 title_;
+
+  // Owned by DesktopNativeWidgetAura.
+  DesktopDragDropClientWayland* drag_drop_client_;
+  views::internal::NativeWidgetDelegate* native_widget_delegate_;
+  aura::Window* content_window_;
+
+  views::DesktopNativeWidgetAura* desktop_native_widget_aura_;
+  // We can optionally have a parent which can order us to close, or own
+  // children who we're responsible for closing when we CloseNow().
+  DesktopWindowTreeHostWayland* window_parent_;
+  std::set<DesktopWindowTreeHostWayland*> window_children_;
+
+  // Platform-specific part of this DesktopWindowTreeHost.
+  std::unique_ptr<ui::PlatformWindow> platform_window_;
+  base::WeakPtrFactory<DesktopWindowTreeHostWayland> close_widget_factory_;
+
+  // A list of all (top-level) windows that have been created but not yet
+  // destroyed.
+  static std::list<gfx::AcceleratedWidget>* open_windows_;
+  // List of all open aura::Window.
+  static std::vector<aura::Window*>* aura_windows_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostWayland);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_WAYLAND_H_