Remove base/win/metro.{cc|h} and some associated code

chrome/browser/ui/metro_pin_tab_helper_win.h

Index: chrome/browser/ui/metro_pin_tab_helper_win.h
diff --git a/chrome/browser/ui/metro_pin_tab_helper_win.h b/chrome/browser/ui/metro_pin_tab_helper_win.h
deleted file mode 100644
index 6018f5977ac3bd04ea8e3d56f3a0602aae1e3c91..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/metro_pin_tab_helper_win.h
+++ /dev/null
@@ -1,70 +0,0 @@
-// Copyright (c) 2012 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_METRO_PIN_TAB_HELPER_WIN_H_
-#define CHROME_BROWSER_UI_METRO_PIN_TAB_HELPER_WIN_H_
-
-#include <vector>
-
-#include "base/macros.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "content/public/browser/web_contents_user_data.h"
-#include "content/public/common/favicon_url.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/gfx/image/image_skia.h"
-
-namespace gfx {
-class Size;
-}
-
-// Per-tab class to help manage metro pinning.
-class MetroPinTabHelper
-    : public content::WebContentsObserver,
-      public content::WebContentsUserData<MetroPinTabHelper> {
- public:
-  ~MetroPinTabHelper() override;
-
-  bool IsPinned() const;
-
-  void TogglePinnedToStartScreen();
-
-  // content::WebContentsObserver overrides:
-  void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) override;
-  void DidUpdateFaviconURL(
-      const std::vector<content::FaviconURL>& candidates) override;
-
- private:
-  // The FaviconDownloader class handles downloading the favicons when a page
-  // is being pinned. After it has downloaded any available favicons it will
-  // continue on with the page pinning action.
-  class FaviconChooser;
-
-  explicit MetroPinTabHelper(content::WebContents* web_contents);
-  friend class content::WebContentsUserData<MetroPinTabHelper>;
-
-  // Favicon download callback.
-  void DidDownloadFavicon(int id,
-                          int http_status_code,
-                          const GURL& image_url,
-                          const std::vector<SkBitmap>& bitmaps,
-                          const std::vector<gfx::Size>& original_bitmap_sizes);
-
-  void UnPinPageFromStartScreen();
-
-  // Called by the |favicon_chooser_| when it has finished.
-  void FaviconDownloaderFinished();
-
-  // Candidate Favicon URLs for the current page.
-  std::vector<content::FaviconURL> favicon_url_candidates_;
-
-  // The currently active FaviconChooser, if there is one.
-  scoped_ptr<FaviconChooser> favicon_chooser_;
-
-
-  DISALLOW_COPY_AND_ASSIGN(MetroPinTabHelper);
-};
-
-#endif  // CHROME_BROWSER_UI_METRO_PIN_TAB_HELPER_WIN_H_