Add WindowPinType property on arua::Window

ui/views/widget/desktop_aura/desktop_window_tree_host.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_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_H_
 
 #include <memory>
 
 #include "ui/aura/window_event_dispatcher.h"
@@ skipping 85 matching lines @@
 
   // Sets the shape of the root window. If |native_region| is NULL then the
   // window reverts to rectangular.
   virtual void SetShape(std::unique_ptr<SkRegion> native_region) = 0;
 
   virtual void Activate() = 0;
   virtual void Deactivate() = 0;
   virtual bool IsActive() const = 0;
   virtual void Maximize() = 0;
   virtual void Minimize() = 0;
+  virtual void Pin(bool trusted) = 0;
   virtual void Restore() = 0;
   virtual bool IsMaximized() const = 0;
   virtual bool IsMinimized() const = 0;
+  virtual bool IsPinned() const = 0;
 
   virtual bool HasCapture() const = 0;
 
   virtual void SetAlwaysOnTop(bool always_on_top) = 0;
   virtual bool IsAlwaysOnTop() const = 0;
 
   virtual void SetVisibleOnAllWorkspaces(bool always_visible) = 0;
   virtual bool IsVisibleOnAllWorkspaces() const = 0;
 
   // Returns true if the title changed.
@@ skipping 49 matching lines @@
   // cursors itself.
   virtual bool ShouldUseDesktopNativeCursorManager() const = 0;
 
   // Returns whether a VisibilityController should be created.
   virtual bool ShouldCreateVisibilityController() const = 0;
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_H_