ARC: Wire minimizing windows from shelf.

chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.cc

 // Copyright 2016 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 "chrome/browser/ui/ash/launcher/arc_app_window_launcher_controller.h"
 
 #include "ash/common/wm/window_state.h"
 #include "ash/shelf/shelf_delegate.h"
 #include "ash/shelf/shelf_util.h"
 #include "ash/wm/window_state_aura.h"
 #include "ash/wm/window_util.h"
@@ skipping 120 matching lines @@
     app_instance->SetTaskActive(task_id_);
     if (widget_)
       widget_->Activate();
   }
 
   void Deactivate() override { NOTREACHED(); }
 
   void Maximize() override { NOTREACHED(); }
 
   void Minimize() override {
-    // TODO(khmel): support window minimizing.
+    if (widget_)
+      widget_->Minimize();
   }
 
   void Restore() override { NOTREACHED(); }
 
   void SetBounds(const gfx::Rect& bounds) override { NOTREACHED(); }
 
   void FlashFrame(bool flash) override { NOTREACHED(); }
 
   bool IsAlwaysOnTop() const override {
     NOTREACHED();
@@ skipping 127 matching lines @@
     return;
 
   int task_id = -1;
   if (sscanf(app_id.c_str(), "org.chromium.arc.%d", &task_id) != 1)
     return;
 
   if (task_id) {
     AppWindow* app_window = GetAppWindowForTask(task_id);
     if (app_window) {
       app_window->set_widget(views::Widget::GetWidgetForNativeWindow(window));
+      ash::SetShelfIDForWindow(app_window->shelf_id(), window);
       if (app_window->controller())
         window->SetTitle(app_window->controller()->GetTitle());
       chrome::MultiUserWindowManager::GetInstance()->SetWindowOwner(
           window,
           user_manager::UserManager::Get()->GetPrimaryUser()->GetAccountId());
     }
   }
 }
 
 void ArcAppWindowLauncherController::OnAppReadyChanged(
@@ skipping 169 matching lines @@
 
   ArcAppWindowLauncherItemController* controller = it->second;
   controller->RemoveWindow(app_window);
   if (!controller->window_count()) {
     ash::ShelfID shelf_id = app_window->shelf_id();
     owner()->CloseLauncherItem(shelf_id);
     app_controller_map_.erase(it);
   }
   app_window->ResetController();
 }