Remove unreleased web app frame code from ChromeOS

chrome/browser/ui/views/frame/web_app_left_header_view_ash.h

-// 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.
-
-#ifndef CHROME_BROWSER_UI_VIEWS_FRAME_WEB_APP_LEFT_HEADER_VIEW_ASH_H_
-#define CHROME_BROWSER_UI_VIEWS_FRAME_WEB_APP_LEFT_HEADER_VIEW_ASH_H_
-
-#include "base/gtest_prod_util.h"
-#include "base/macros.h"
-#include "ui/views/controls/button/button.h"
-
-class BrowserView;
-
-namespace ash {
-class FrameCaptionButton;
-}
-
-// WebAppLeftHeaderView is a container view for any icons on the left of the
-// frame used for web app style windows. It contains a back button and a
-// location icon.
-class WebAppLeftHeaderView : public views::View,
-                             public views::ButtonListener {
- public:
-  static const char kViewClassName[];
-
-  explicit WebAppLeftHeaderView(BrowserView* browser_view);
-  ~WebAppLeftHeaderView() override;
-
-  // Updates the view.
-  void Update();
-
-  // Update whether to paint the header view as active or not.
-  void SetPaintAsActive(bool active);
-
-  views::View* GetLocationIconView() const;
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(WebAppLeftHeaderViewTest, BackButton);
-  FRIEND_TEST_ALL_PREFIXES(WebAppLeftHeaderViewTest, LocationIcon);
-
-  // views::View:
-  const char* GetClassName() const override;
-
-  // views::ButtonListener:
-  void ButtonPressed(views::Button* sender, const ui::Event& event) override;
-
-  // Ask the browser to show the website settings dialog.
-  void ShowWebsiteSettings() const;
-
-  // Update the state of the back button.
-  void UpdateBackButtonState(bool enabled);
-
-  // The BrowserView for the frame.
-  BrowserView* browser_view_;
-
-  // The back button.
-  ash::FrameCaptionButton* back_button_;
-
-  // The location icon indicator. Shows the connection security status and
-  // allows the user to bring up the website settings dialog.
-  ash::FrameCaptionButton* location_icon_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebAppLeftHeaderView);
-};
-
-#endif  // CHROME_BROWSER_UI_VIEWS_FRAME_WEB_APP_LEFT_HEADER_VIEW_ASH_H_