predictors: Refactor the resource_prefetch_predictor database handling.

chrome/browser/predictors/resource_prefetch_predictor_test_util.h

+// Copyright 2016 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.
+#ifndef CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_TEST_UTIL_H_
+#define CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_TEST_UTIL_H_
+
+#include "chrome/browser/predictors/resource_prefetch_predictor.pb.h"
+#include "chrome/browser/predictors/resource_prefetch_predictor_tables.h"
+#include "content/public/common/resource_type.h"
+#include "net/base/request_priority.h"
+
+class ostream;
+
+namespace predictors {
+
+::chrome_browser_predictors::ResourceData MakeResourceData(
+    std::string resource_url,
+    content::ResourceType resource_type,
+    int number_of_hits,
+    int number_of_misses,
+    int consecutive_misses,
+    double average_position,
+    net::RequestPriority priority,
+    bool has_validators,
+    bool always_revalidate);
+
+// For printing failures nicely.
+void PrintTo(const ::chrome_browser_predictors::ResourceData& resource,
+             ::std::ostream* os);
+void PrintTo(const ResourcePrefetchPredictorTables::PrefetchData& data,
+             ::std::ostream* os);
+
+bool operator==(const ::chrome_browser_predictors::ResourceData& lhs,
+                const ::chrome_browser_predictors::ResourceData& rhs);
+
+bool operator==(const ResourcePrefetchPredictorTables::PrefetchData& lhs,
+                const ResourcePrefetchPredictorTables::PrefetchData& rhs);
+
+}  // namespace predictors
+
+#endif  // CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_TEST_UTIL_H_