Componentize TopSites, TopSitesBackend, TopSitesDatabase

components/history/core/browser/top_sites.cc

+// Copyright (c) 2013 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.
+
+#include "components/history/core/browser/top_sites.h"
+
+namespace history {
+
+PrepopulatedPage::PrepopulatedPage()
+    : url(), favicon_id(-1), thumbnail_id(-1), color() {
+}
+
+PrepopulatedPage::PrepopulatedPage(const GURL& url,
+                                   const base::string16& title,
+                                   int favicon_id,
+                                   int thumbnail_id,
+                                   SkColor color)
+    : url(url, title),
+      favicon_id(favicon_id),
+      thumbnail_id(thumbnail_id),
+      color(color) {
+  this->url.redirects.push_back(url);
+}
+
+TopSites::TopSites() {
+}
+
+TopSites::~TopSites() {
+}
+
+void TopSites::AddObserver(TopSitesObserver* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void TopSites::RemoveObserver(TopSitesObserver* observer) {
+  observer_list_.RemoveObserver(observer);
+}
+
+void TopSites::NotifyTopSitesLoaded() {
+  FOR_EACH_OBSERVER(TopSitesObserver, observer_list_, TopSitesLoaded(this));
+}
+
+void TopSites::NotifyTopSitesChanged() {
+  FOR_EACH_OBSERVER(TopSitesObserver, observer_list_, TopSitesChanged(this));
+}
+
+}  // namespace history