Add asserts to TestingProfile::CreateHistoryService to ensure files are deleted

chrome/browser/bookmarks/bookmark_model_unittest.cc

Index: chrome/browser/bookmarks/bookmark_model_unittest.cc
diff --git a/chrome/browser/bookmarks/bookmark_model_unittest.cc b/chrome/browser/bookmarks/bookmark_model_unittest.cc
index 06610d715c6c3f94f54829fdbef50248866c0e97..65f5c65d756abe9153a75b7d0b81ac504bd0974c 100644
--- a/chrome/browser/bookmarks/bookmark_model_unittest.cc
+++ b/chrome/browser/bookmarks/bookmark_model_unittest.cc
@@ -910,15 +910,6 @@ class BookmarkModelTestWithProfile : public testing::Test {
     ui_test_utils::WaitForBookmarkModelToLoad(bb_model_);
   }
 
-  // Destroys the current profile, creates a new one and creates the history
-  // service.
-  void RecreateProfile() {
-    // Need to shutdown the old one before creating a new one.
-    profile_.reset(NULL);
-    profile_.reset(new TestingProfile());
-    profile_->CreateHistoryService(true, false);
-  }
-
   // The profile.
   scoped_ptr<TestingProfile> profile_;
   BookmarkModel* bb_model_;
@@ -954,7 +945,7 @@ TEST_F(BookmarkModelTestWithProfile, CreateAndRestore) {
     profile_.reset(NULL);
     profile_.reset(new TestingProfile());
     profile_->CreateBookmarkModel(true);
-    profile_->CreateHistoryService(true, false);
+    ASSERT_TRUE(profile_->CreateHistoryService(true, false));
     BlockTillBookmarkModelLoaded();
 
     TestNode bbn;