Topsites become keyedService based.

chrome/browser/precache/most_visited_urls_provider.h

Index: chrome/browser/precache/most_visited_urls_provider.h
diff --git a/chrome/browser/precache/most_visited_urls_provider.h b/chrome/browser/precache/most_visited_urls_provider.h
index 253181cdb3b21c2a7a7ee9d83a0fdba826468d72..368e3800a7cf1667915a0cba8592f698e779801a 100644
--- a/chrome/browser/precache/most_visited_urls_provider.h
+++ b/chrome/browser/precache/most_visited_urls_provider.h
@@ -11,7 +11,7 @@
 #include "components/precache/core/url_list_provider.h"
 
 namespace history {
-class TopSites;
+class TopSitesProvider;
 }
 
 namespace precache {
@@ -19,7 +19,7 @@ namespace precache {
 // A URLListProvider that provides a list of the user's most visited URLs.
 class MostVisitedURLsProvider : public URLListProvider {
  public:
-  explicit MostVisitedURLsProvider(history::TopSites* top_sites);
+  explicit MostVisitedURLsProvider(history::TopSitesProvider* top_sites);
   ~MostVisitedURLsProvider();
 
   // Returns a list of the user's most visited URLs via a callback. May be
@@ -28,7 +28,7 @@ class MostVisitedURLsProvider : public URLListProvider {
   void GetURLs(const GetURLsCallback& callback) override;
 
  private:
-  scoped_refptr<history::TopSites> top_sites_;
+  scoped_refptr<history::TopSitesProvider> top_sites_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(MostVisitedURLsProvider);
 };