[Icons NTP] Refactor large_icon_source to extract the logic shared between desktop and Android to f…

chrome/browser/favicon/large_icon_service_factory.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_FAVICON_FALLBACK_ICON_SERVICE_FACTORY_H_
-#define CHROME_BROWSER_FAVICON_FALLBACK_ICON_SERVICE_FACTORY_H_
+#ifndef CHROME_BROWSER_FAVICON_LARGE_ICON_SERVICE_FACTORY_H_
+#define CHROME_BROWSER_FAVICON_LARGE_ICON_SERVICE_FACTORY_H_
 
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
 
 template <typename T> struct DefaultSingletonTraits;
 
 namespace content {
 class BrowserContext;
 }
 
 namespace favicon {
-class FallbackIconService;
+class LargeIconService;
 }
 
-// Singleton that owns all FallbackIconService and associates them with
+// Singleton that owns all LargeIconService and associates them with
 // BrowserContext instances.
-class FallbackIconServiceFactory : public BrowserContextKeyedServiceFactory {
+class LargeIconServiceFactory : public BrowserContextKeyedServiceFactory {
  public:
-  static favicon::FallbackIconService* GetForBrowserContext(
+  static favicon::LargeIconService* GetForBrowserContext(
       content::BrowserContext* context);
 
-  static FallbackIconServiceFactory* GetInstance();
+  static LargeIconServiceFactory* GetInstance();
 
  private:
-  friend struct DefaultSingletonTraits<FallbackIconServiceFactory>;
+  friend struct DefaultSingletonTraits<LargeIconServiceFactory>;
 
-  FallbackIconServiceFactory();
-  ~FallbackIconServiceFactory() override;
+  LargeIconServiceFactory();
+  ~LargeIconServiceFactory() override;
 
   // BrowserContextKeyedServiceFactory:
   KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* context) const override;
   bool ServiceIsNULLWhileTesting() const override;
 
-  DISALLOW_COPY_AND_ASSIGN(FallbackIconServiceFactory);
+  DISALLOW_COPY_AND_ASSIGN(LargeIconServiceFactory);
 };
 
-#endif  // CHROME_BROWSER_FAVICON_FALLBACK_ICON_SERVICE_FACTORY_H_
+#endif  // CHROME_BROWSER_FAVICON_LARGE_ICON_SERVICE_FACTORY_H_