Remove unused chrome://large-icon

chrome/browser/ui/webui/large_icon_source.h

-// Copyright 2015 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_WEBUI_LARGE_ICON_SOURCE_H_
-#define CHROME_BROWSER_UI_WEBUI_LARGE_ICON_SOURCE_H_
-
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "base/task/cancelable_task_tracker.h"
-#include "content/public/browser/url_data_source.h"
-
-namespace favicon {
-class LargeIconService;
-}
-
-namespace favicon_base {
-struct LargeIconResult;
-}
-
-// LargeIconSource services explicit chrome:// requests for large icons.
-//
-// Format:
-//   chrome://large-icon/size/url
-//
-// Parameter:
-//  'size'             Required (including trailing '/')
-//    Positive integer to specify the large icon's size in pixels.
-//  'url'              Optional
-//    String to specify the page URL of the large icon.
-//
-//  Example: chrome://large-icon/48/http://www.google.com/
-//    This requests a 48x48 large icon for http://www.google.com.
-class LargeIconSource : public content::URLDataSource {
- public:
-  // |large_icon_service| is owned by caller and may be null.
-  explicit LargeIconSource(favicon::LargeIconService* large_icon_service);
-
-  ~LargeIconSource() override;
-
-  // content::URLDataSource implementation.
-  std::string GetSource() const override;
-  void StartDataRequest(
-      const std::string& path,
-      const content::ResourceRequestInfo::WebContentsGetter& wc_getter,
-      const content::URLDataSource::GotDataCallback& callback) override;
-  std::string GetMimeType(const std::string&) const override;
-  bool AllowCaching() const override;
-  bool ShouldReplaceExistingSource() const override;
-  bool ShouldServiceRequest(const GURL& url,
-                            content::ResourceContext* resource_context,
-                            int render_process_id) const override;
-
- private:
-  // Called with results of large icon retrieval request.
-  void OnLargeIconDataAvailable(
-      const content::URLDataSource::GotDataCallback& callback,
-      const GURL& url,
-      int size,
-      const favicon_base::LargeIconResult& bitmap_result);
-
-  // Returns null to trigger "Not Found" response.
-  void SendNotFoundResponse(
-      const content::URLDataSource::GotDataCallback& callback);
-
-  base::CancelableTaskTracker cancelable_task_tracker_;
-
-  // Owned by client.
-  favicon::LargeIconService* large_icon_service_;
-
-  DISALLOW_COPY_AND_ASSIGN(LargeIconSource);
-};
-
-#endif  // CHROME_BROWSER_UI_WEBUI_LARGE_ICON_SOURCE_H_