Add WindowPinType property on arua::Window

ui/views/widget/desktop_aura/desktop_window_tree_host_x11.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_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <X11/extensions/shape.h>
@@ skipping 102 matching lines @@
   gfx::Rect GetClientAreaBoundsInScreen() const override;
   gfx::Rect GetRestoredBounds() const override;
   std::string GetWorkspace() const override;
   gfx::Rect GetWorkAreaBoundsInScreen() const override;
   void SetShape(std::unique_ptr<SkRegion> native_region) override;
   void Activate() override;
   void Deactivate() override;
   bool IsActive() const override;
   void Maximize() override;
   void Minimize() override;
+  void Pin(bool trusted) override;
   void Restore() override;
   bool IsMaximized() const override;
   bool IsMinimized() const override;
+  bool IsPinned() const override;
   bool HasCapture() const override;
   void SetAlwaysOnTop(bool always_on_top) override;
   bool IsAlwaysOnTop() const override;
   void SetVisibleOnAllWorkspaces(bool always_visible) override;
   bool IsVisibleOnAllWorkspaces() const override;
   bool SetWindowTitle(const base::string16& title) override;
   void ClearNativeFocus() override;
   Widget::MoveLoopResult RunMoveLoop(
       const gfx::Vector2d& drag_offset,
       Widget::MoveLoopSource source,
@@ skipping 292 matching lines @@
 
   base::WeakPtrFactory<DesktopWindowTreeHostX11> close_widget_factory_;
   base::WeakPtrFactory<DesktopWindowTreeHostX11> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostX11);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_X11_H_