Revert of Linux Aura Task Manager Frame Buttons Misaligned

ui/views/window/window_button_order_provider.cc

-// Copyright 2014 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/window/window_button_order_provider.h"
-
-namespace views {
-
-// static
-WindowButtonOrderProvider* WindowButtonOrderProvider::instance_ = NULL;
-
-///////////////////////////////////////////////////////////////////////////////
-// WindowButtonOrderProvider, public:
-
-// static
-WindowButtonOrderProvider* WindowButtonOrderProvider::GetInstance() {
-  if (!instance_)
-    instance_ = new WindowButtonOrderProvider;
-  return instance_;
-}
-
-std::vector<views::FrameButton> const
-    WindowButtonOrderProvider::GetLeadingButtons() const {
-  return leading_buttons_;
-}
-
-std::vector<views::FrameButton> const
-    WindowButtonOrderProvider::GetTrailingButtons() const {
-  return trailing_buttons_;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// WindowButtonOrderProvider, protected:
-
-WindowButtonOrderProvider::WindowButtonOrderProvider() {
-  trailing_buttons_.push_back(views::FRAME_BUTTON_MINIMIZE);
-  trailing_buttons_.push_back(views::FRAME_BUTTON_MAXIMIZE);
-  trailing_buttons_.push_back(views::FRAME_BUTTON_CLOSE);
-}
-
-WindowButtonOrderProvider::~WindowButtonOrderProvider() {
-}
-
-void WindowButtonOrderProvider::SetWindowButtonOrder(
-    const std::vector<views::FrameButton>& leading_buttons,
-    const std::vector<views::FrameButton>& trailing_buttons) {
-  leading_buttons_ = leading_buttons;
-  trailing_buttons_ = trailing_buttons;
-}
-
-}  // namespace views