[sql] Initialize StatisticsRecorder in SQLTestSuite.

sql/test/sql_test_suite.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 "sql/test/sql_test_suite.h"
 
+#include "base/metrics/statistics_recorder.h"
 #include "sql/test/paths.h"
 
 namespace sql {
 
 SQLTestSuite::SQLTestSuite(int argc, char** argv)
     : base::TestSuite(argc, argv) {}
 
 SQLTestSuite::~SQLTestSuite() {}
 
 void SQLTestSuite::Initialize() {
   base::TestSuite::Initialize();
+
+  // Initialize the histograms subsystem, so that any histograms hit in tests
+  // are correctly registered with the statistics recorder and can be queried
+  // by tests.
+  base::StatisticsRecorder::Initialize();
+
   sql::test::RegisterPathProvider();
 }
 
 void SQLTestSuite::Shutdown() {
   base::TestSuite::Shutdown();
 }
 
 }  // namespace sql