Topsites become keyedService based.

chrome/browser/profiles/profile_impl.h

Index: chrome/browser/profiles/profile_impl.h
diff --git a/chrome/browser/profiles/profile_impl.h b/chrome/browser/profiles/profile_impl.h
index 286be73cc7d673dd6057de6a09f68300b4413fa8..03078af5135e0b0b220a2bae856863b2946450c2 100644
--- a/chrome/browser/profiles/profile_impl.h
+++ b/chrome/browser/profiles/profile_impl.h
@@ -103,8 +103,6 @@ class ProfileImpl : public Profile {
   bool IsSupervised() override;
   bool IsChild() override;
   bool IsLegacySupervised() override;
-  history::TopSites* GetTopSites() override;
-  history::TopSites* GetTopSitesWithoutCreating() override;
   ExtensionSpecialStoragePolicy* GetExtensionSpecialStoragePolicy() override;
   PrefService* GetPrefs() override;
   chrome::ChromeZoomLevelPrefs* GetZoomLevelPrefs() override;
@@ -249,8 +247,6 @@ class ProfileImpl : public Profile {
   // See GetStartTime for details.
   base::Time start_time_;
 
-  scoped_refptr<history::TopSites> top_sites_;  // For history and thumbnails.
-
 #if defined(OS_CHROMEOS)
   scoped_ptr<chromeos::Preferences> chromeos_preferences_;