Add WindowPinType property on arua::Window

components/exo/shell_surface.cc

Index: components/exo/shell_surface.cc
diff --git a/components/exo/shell_surface.cc b/components/exo/shell_surface.cc
index 7c034052e72dd8a5f67298093964bd4a31dbf8d6..0ccf43e4ffdb1ea274edbd57d56c155837d19c8c 100644
--- a/components/exo/shell_surface.cc
+++ b/components/exo/shell_surface.cc
@@ -493,14 +493,18 @@ void ShellSurface::SetPinned(bool pinned, bool trusted) {
   // state doesn't change.
   ScopedConfigure scoped_configure(this, true);
   if (pinned) {
-    ash::wm::PinWindow(widget_->GetNativeWindow(), trusted);
+    aura::client::WindowPinType pin_type =
+        trusted ? aura::client::WindowPinType::TRUSTED_PINNED
+                : aura::client::WindowPinType::PINNED;
+    widget_->GetNativeWindow()->SetProperty(aura::client::kWindowPinTypeKey,
+                                            pin_type);
   } else {
     // At the moment, we cannot just unpin the window state, due to ash
     // implementation. Instead, we call Restore() to unpin, if it is Pinned
     // state. In this implementation, we may loose the previous state,
     // if the previous state is fullscreen, etc.
-    if (ash::wm::GetWindowState(widget_->GetNativeWindow())->IsPinned())
-      widget_->Restore();
+    widget_->GetNativeWindow()->SetProperty(aura::client::kWindowPinTypeKey,
+                                            aura::client::WindowPinType::NONE);
   }
 }