Add support for X11 workspaces

ui/views/widget/widget.h

 // Copyright (c) 2012 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_WIDGET_H_
 #define UI_VIEWS_WIDGET_WIDGET_H_
 
 #include <memory>
 #include <set>
 #include <stack>
@@ skipping 231 matching lines @@
     // Whether the widget should be maximized or minimized.
     ui::WindowShowState show_state;
     gfx::NativeView parent;
     // Used only by mus and is necessitated by mus not being a NativeView.
     mus::Window* parent_mus = nullptr;
     // Specifies the initial bounds of the Widget. Default is empty, which means
     // the NativeWidget may specify a default size. If the parent is specified,
     // |bounds| is in the parent's coordinate system. If the parent is not
     // specified, it's in screen's global coordinate system.
     gfx::Rect bounds;
+    // The initial workspace of the Widget.  Default is -1, which means the
+    // current workspace.
+    int workspace;
     // When set, this value is used as the Widget's NativeWidget implementation.
     // The Widget will not construct a default one. Default is NULL.
     NativeWidget* native_widget;
     // Aura-only. Provides a DesktopWindowTreeHost implementation to use instead
     // of the default one.
     // TODO(beng): Figure out if there's a better way to expose this, e.g. get
     // rid of NW subclasses and do this all via message handling.
     DesktopWindowTreeHost* desktop_window_tree_host;
     // Only used by NativeWidgetAura. Specifies the type of layer for the
     // aura::Window. Default is ui::LAYER_TEXTURED.
@@ skipping 155 matching lines @@
 
   // Returns the bounds of the Widget in screen coordinates.
   gfx::Rect GetWindowBoundsInScreen() const;
 
   // Returns the bounds of the Widget's client area in screen coordinates.
   gfx::Rect GetClientAreaBoundsInScreen() const;
 
   // Retrieves the restored bounds for the window.
   gfx::Rect GetRestoredBounds() const;
 
+  // Retrieves the restored workspace for the window.
+  int GetRestoredWorkspace() const;

[sky, 2016/05/02 15:11:23]

This is the workspace the window is on, right? How about GetWorkspace()?

[Tom (Use chromium acct), 2016/05/02 20:32:38]

yes & done

+
   // Sizes and/or places the widget to the specified bounds, size or position.
   void SetBounds(const gfx::Rect& bounds);
   void SetSize(const gfx::Size& size);
 
   // Sizes the window to the specified size and centerizes it.
   void CenterWindow(const gfx::Size& size);
 
   // Like SetBounds(), but ensures the Widget is fully visible on screen,
   // resizing and/or repositioning as necessary. This is only useful for
   // non-child widgets.
@@ skipping 343 matching lines @@
   void OnNativeBlur() override;
   void OnNativeWidgetVisibilityChanging(bool visible) override;
   void OnNativeWidgetVisibilityChanged(bool visible) override;
   void OnNativeWidgetCreated(bool desktop_widget) override;
   void OnNativeWidgetDestroying() override;
   void OnNativeWidgetDestroyed() override;
   gfx::Size GetMinimumSize() const override;
   gfx::Size GetMaximumSize() const override;
   void OnNativeWidgetMove() override;
   void OnNativeWidgetSizeChanged(const gfx::Size& new_size) override;
+  void OnNativeWidgetWorkspaceChanged(int workspace_id) override;
   void OnNativeWidgetWindowShowStateChanged() override;
   void OnNativeWidgetBeginUserBoundsChange() override;
   void OnNativeWidgetEndUserBoundsChange() override;
   bool HasFocusManager() const override;
   void OnNativeWidgetPaint(const ui::PaintContext& context) override;
   int GetNonClientComponent(const gfx::Point& point) override;
   void OnKeyEvent(ui::KeyEvent* event) override;
   void OnMouseEvent(ui::MouseEvent* event) override;
   void OnMouseCaptureLost() override;
   void OnScrollEvent(ui::ScrollEvent* event) override;
@@ skipping 161 matching lines @@
   bool movement_disabled_;
 
   ScopedObserver<ui::NativeTheme, ui::NativeThemeObserver> observer_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(Widget);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_WIDGET_H_