Refactor sending NOTIFICATION_HISTORY_URL_VISITED

chrome/browser/history/chrome_history_client.h

Index: chrome/browser/history/chrome_history_client.h
diff --git a/chrome/browser/history/chrome_history_client.h b/chrome/browser/history/chrome_history_client.h
index 92f918609c7c6004b453b46268db77f605171449..a7ddc14dec69ca494a22d90036359b85f0dcaa49 100644
--- a/chrome/browser/history/chrome_history_client.h
+++ b/chrome/browser/history/chrome_history_client.h
@@ -7,9 +7,11 @@
 
 #include "base/macros.h"
 #include "components/history/core/browser/history_client.h"
+#include "components/history/core/browser/history_service_observer.h"
 #include "components/history/core/browser/top_sites_observer.h"
 
 class BookmarkModel;
+class HistoryService;
 class Profile;
 
 namespace history {
@@ -19,6 +21,7 @@ class TopSites;
 // This class implements history::HistoryClient to abstract operations that
 // depend on Chrome environment.
 class ChromeHistoryClient : public history::HistoryClient,
+                            public history::HistoryServiceObserver,
                             public history::TopSitesObserver {
  public:
   explicit ChromeHistoryClient(BookmarkModel* bookmark_model,
@@ -26,6 +29,8 @@ class ChromeHistoryClient : public history::HistoryClient,
                                history::TopSites* top_sites);
   virtual ~ChromeHistoryClient();
 
+  void SetHistoryService(HistoryService* history_service);
+
   // history::HistoryClient:
   virtual void BlockUntilBookmarksLoaded() OVERRIDE;
   virtual bool IsBookmarked(const GURL& url) OVERRIDE;
@@ -37,6 +42,12 @@ class ChromeHistoryClient : public history::HistoryClient,
   // KeyedService:
   virtual void Shutdown() OVERRIDE;
 
+  // HistoryServiceObserver:
+  virtual void OnURLVisited(ui::PageTransition transition,
+                            const history::URLRow& row,
+                            const history::RedirectList& redirects,
+                            const base::Time& visit_time) OVERRIDE;
+
   // TopSitesObserver:
   virtual void TopSitesLoaded(history::TopSites* top_sites) OVERRIDE;
   virtual void TopSitesChanged(history::TopSites* top_sites) OVERRIDE;
@@ -45,6 +56,7 @@ class ChromeHistoryClient : public history::HistoryClient,
   // The BookmarkModel, this should outlive ChromeHistoryClient.
   BookmarkModel* bookmark_model_;
   Profile* profile_;
+  HistoryService* history_service_;
   // The TopSites object is owned by the Profile (see
   // chrome/browser/profiles/profile_impl.h)
   // and lazily constructed by the  getter.