Create LoadingDataCollector class and have observers rely on it instead of ResourcePrefetchPredictor

chrome/browser/predictors/resource_prefetch_predictor_tables_unittest.cc

 // Copyright 2014 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 <memory>
 #include <set>
 #include <utility>
 #include <vector>
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/predictors/loading_test_util.h"
 #include "chrome/browser/predictors/predictor_database.h"
 #include "chrome/browser/predictors/resource_prefetch_predictor_tables.h"
-#include "chrome/browser/predictors/resource_prefetch_predictor_test_util.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "net/base/request_priority.h"
 #include "sql/statement.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace predictors {
 
 class ResourcePrefetchPredictorTablesTest : public testing::Test {
  public:
@@ skipping 961 matching lines @@
 
 TEST_F(ResourcePrefetchPredictorTablesReopenTest, DeleteData) {
   TestDeleteData();
 }
 
 TEST_F(ResourcePrefetchPredictorTablesReopenTest, DeleteAllData) {
   TestDeleteAllData();
 }
 
 }  // namespace predictors