Create OpenClose browser test for TaskManager with necessary refactoring....

chrome/browser/task_manager_win.cc

 // Copyright (c) 2009 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/task_manager.h"
 
 #include "base/stats_table.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 166 matching lines @@
   void Init();
   virtual void Layout();
   virtual gfx::Size GetPreferredSize();
   virtual void ViewHierarchyChanged(bool is_add, views::View* parent,
                                     views::View* child);
 
   // TaskManagerView
   virtual void GetSelection(std::vector<int>* selection);
   virtual void GetFocused(std::vector<int>* focused);
   virtual void OpenWindow();
+  virtual void CloseWindow();
 
   // ButtonListener implementation.
   virtual void ButtonPressed(views::Button* sender);
 
   // views::DialogDelegate
   virtual bool CanResize() const;
   virtual bool CanMaximize() const;
   virtual bool ExecuteWindowsCommand(int command_id);
   virtual std::wstring GetWindowTitle() const;
   virtual std::wstring GetWindowName() const;
@@ skipping 230 matching lines @@
   if (window()) {
     window()->Activate();
   } else {
     views::Window::CreateChromeWindow(NULL, gfx::Rect(), this);
     InitAlwaysOnTopState();
     model_->StartUpdating();
     window()->Show();
   }
 }
 
+void TaskManagerViewImpl::CloseWindow() {
+  if (!window())
+    return;
+  window()->HideWindow();
+}
+
 // ButtonListener implementation.
 void TaskManagerViewImpl::ButtonPressed(views::Button* sender) {
   if (sender == kill_button_.get())
     task_manager_->KillSelectedProcesses();
 }
 
 // DialogDelegate implementation.
 bool TaskManagerViewImpl::CanResize() const {
   return true;
 }
@@ skipping 44 matching lines @@
 
 int TaskManagerViewImpl::GetDialogButtons() const {
   return MessageBoxFlags::DIALOGBUTTON_NONE;
 }
 
 void TaskManagerViewImpl::WindowClosing() {
   // Remove the view from its parent to trigger the contents'
   // ViewHierarchyChanged notification to unhook the extra buttons from the
   // non-client view.
   GetParent()->RemoveChildView(this);
-  task_manager_->Close();
+  task_manager_->OnWindowClosed();
 }
 
 void TaskManagerViewImpl::DeleteDelegate() {
   ReleaseWindow();
 }
 
 views::View* TaskManagerViewImpl::GetContentsView() {
   return this;
 }
 
@@ skipping 92 matching lines @@
       g_browser_process->local_state()->GetDictionary(GetWindowName().c_str());
   return dictionary &&
       dictionary->GetBoolean(L"always_on_top", always_on_top) && always_on_top;
 }
 
 }  // namespace
 
 void TaskManager::Init() {
   view_.reset(new TaskManagerViewImpl(this, model_.get()));
 }