Remove TopSites notification in favor of Observers

chrome/test/base/testing_profile.cc

Index: chrome/test/base/testing_profile.cc
diff --git a/chrome/test/base/testing_profile.cc b/chrome/test/base/testing_profile.cc
index d42e0c7e8f8654813d4f04a6639fccd45dbff597..0d7d1442be8593268994b60de6071ef7ce6e5bec 100644
--- a/chrome/test/base/testing_profile.cc
+++ b/chrome/test/base/testing_profile.cc
@@ -224,9 +224,7 @@ KeyedService* BuildChromeBookmarkClient(
 KeyedService* BuildChromeHistoryClient(
     content::BrowserContext* context) {
   Profile* profile = static_cast<Profile*>(context);
-  return new ChromeHistoryClient(BookmarkModelFactory::GetForProfile(profile),
-                                 profile,
-                                 profile->GetTopSites());
+  return new ChromeHistoryClient(BookmarkModelFactory::GetForProfile(profile));
 }
 
 void TestProfileErrorCallback(WebDataServiceWrapper::ErrorType error_type,