Move remaining mus::WindowObserver lifecycle callbacks from PlatformWindowMus to NativeWidgetMus::M…

ui/views/mus/native_widget_mus.cc

 // Copyright 2015 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/mus/native_widget_mus.h"
 
 #include "base/macros.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/mus/public/cpp/property_type_converters.h"
 #include "components/mus/public/cpp/window.h"
@@ skipping 344 matching lines @@
       case mus::mojom::ShowState::DOCKED:
         // TODO(sky): support docked.
         state = ui::PLATFORM_WINDOW_STATE_NORMAL;
         break;
       case mus::mojom::ShowState::FULLSCREEN:
         state = ui::PLATFORM_WINDOW_STATE_FULLSCREEN;
         break;
     }
     platform_window_delegate()->OnWindowStateChanged(state);
   }
+  void OnWindowDestroyed(mus::Window* window) override {
+    DCHECK_EQ(mus_window(), window);
+    platform_window_delegate()->OnClosed();
+  }
+  void OnWindowFocusChanged(mus::Window* gained_focus,
+                            mus::Window* lost_focus) override {
+    if (gained_focus == mus_window())
+      platform_window_delegate()->OnActivationChanged(true);
+    else if (lost_focus == mus_window())
+      platform_window_delegate()->OnActivationChanged(false);
+  }
+  void OnRequestClose(mus::Window* window) override {
+    platform_window_delegate()->OnCloseRequest();
+  }
 
  private:
   mus::Window* mus_window() { return native_widget_mus_->window(); }
   WindowTreeHostMus* window_tree_host() {
     return native_widget_mus_->window_tree_host();
   }
   ui::PlatformWindowDelegate* platform_window_delegate() {
     return native_widget_mus_->window_tree_host();
   }
 
@@ skipping 834 matching lines @@
     GetNativeWindow()->Show();
   } else {
     window_tree_host_->Hide();
     window_->SetVisible(false);
     GetNativeWindow()->Hide();
   }
   native_widget_delegate_->OnNativeWidgetVisibilityChanged(window->visible());
 }
 
 }  // namespace views