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

chrome/browser/history/android/android_history_provider_service_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/history/android/android_history_provider_service.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "chrome/browser/history/android/android_history_types.h"
 #include "chrome/common/chrome_constants.h"
@@ skipping 35 matching lines @@
     // Setup the testing profile, so the bookmark_model_sql_handler could
     // get the bookmark model from it.
     ASSERT_TRUE(profile_manager_.SetUp());
     // It seems that the name has to be chrome::kInitialProfile, so it
     // could be found by ProfileManager::GetLastUsedProfile().
     testing_profile_ = profile_manager_.CreateTestingProfile(
         chrome::kInitialProfile);
 
     testing_profile_->CreateBookmarkModel(true);
     ui_test_utils::WaitForBookmarkModelToLoad(testing_profile_);
-    testing_profile_->CreateHistoryService(true, false);
+    ASSERT_TRUE(testing_profile_->CreateHistoryService(true, false));
     service_.reset(new AndroidHistoryProviderService(testing_profile_));
   }
 
   virtual void TearDown() OVERRIDE {
     testing_profile_->DestroyHistoryService();
     profile_manager_.DeleteTestingProfile(chrome::kInitialProfile);
     testing_profile_=NULL;
   }
 
  protected:
@@ skipping 186 matching lines @@
 
   // Delete the row.
   service_->DeleteSearchTerms(std::string(), std::vector<string16>(),
       &cancelable_consumer_, Bind(&CallbackHelper::OnDeleted, callback.get()));
   base::MessageLoop::current()->Run();
   EXPECT_TRUE(callback->success());
   EXPECT_EQ(1, callback->count());
 }
 
 }  // namespace