Add WindowPinType property on arua::Window

ui/views/widget/native_widget_aura.cc

 // 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.
 
 #include "ui/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/memory/ptr_util.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 614 matching lines @@
     return;  // Nothing to do.
 
   wm::SetWindowFullscreen(window_, fullscreen);
 }
 
 bool NativeWidgetAura::IsFullscreen() const {
   return window_ && window_->GetProperty(aura::client::kShowStateKey) ==
       ui::SHOW_STATE_FULLSCREEN;
 }
 
+void NativeWidgetAura::Pin(bool trusted) {
+  aura::client::WindowPinType type =
+      trusted ? aura::client::WindowPinType::TRUSTED_PINNED
+              : aura::client::WindowPinType::PINNED;
+  if (!window_ || window_->GetProperty(aura::client::kWindowPinTypeKey) == type)
+    return;  // Nothing to do.
+
+  window_->SetProperty(aura::client::kWindowPinTypeKey, type);
+}
+
+bool NativeWidgetAura::IsPinned() const {
+  aura::client::WindowPinType type =
+      window_->GetProperty(aura::client::kWindowPinTypeKey);
+  return type == aura::client::WindowPinType::PINNED ||
+         type == aura::client::WindowPinType::TRUSTED_PINNED;
+}
+
 void NativeWidgetAura::SetOpacity(float opacity) {
   if (window_)
     window_->layer()->SetOpacity(opacity);
 }
 
 void NativeWidgetAura::FlashFrame(bool flash) {
   if (window_)
     window_->SetProperty(aura::client::kDrawAttentionKey, flash);
 }
 
@@ skipping 544 matching lines @@
     gfx::NativeView native_view) {
   aura::client::CaptureClient* capture_client =
       aura::client::GetCaptureClient(native_view->GetRootWindow());
   if (!capture_client)
     return nullptr;
   return capture_client->GetGlobalCaptureWindow();
 }
 
 }  // namespace internal
 }  // namespace views