Remove non-Android handling in LargeIconSource

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 "components/favicon/core/fallback_icon_service.h"
 #include "content/public/browser/url_data_source.h"
 
 namespace favicon {
-class FallbackIconService;
 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:
-  // |fallback_icon_service| and |large_icon_service| are owned by caller and
-  // may be null.
-  LargeIconSource(favicon::FallbackIconService* fallback_icon_service,
-                  favicon::LargeIconService* large_icon_service);
+  // |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;
@@ skipping 11 matching lines @@
       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::FallbackIconService* fallback_icon_service_;
-
-  // Owned by client.
   favicon::LargeIconService* large_icon_service_;
 
   DISALLOW_COPY_AND_ASSIGN(LargeIconSource);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_LARGE_ICON_SOURCE_H_