Move StatisticsRecorder out of histogram.cc/h for further refactoring.

chrome/browser/safe_browsing/safe_browsing_service_browsertest.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.
 //
 // This test creates a safebrowsing service using test safebrowsing database
 // and a test protocol manager. It is used to test logics in safebrowsing
 // service.
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
-#include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/scoped_temp_dir.h"
 #include "base/string_split.h"
 #include "base/test/thread_test_helper.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/safe_browsing/client_side_detection_service.h"
 #include "chrome/browser/safe_browsing/protocol_manager.h"
 #include "chrome/browser/safe_browsing/safe_browsing_database.h"
 #include "chrome/browser/safe_browsing/safe_browsing_service.h"
 #include "chrome/browser/safe_browsing/safe_browsing_util.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "crypto/sha2.h"
 #include "net/cookies/cookie_store.h"
 #include "sql/connection.h"
 #include "sql/statement.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
-using base::Histogram;
-using base::StatisticsRecorder;
 using content::BrowserThread;
 using content::InterstitialPage;
 using content::WebContents;
 using ::testing::_;
 using ::testing::Mock;
 using ::testing::StrictMock;
 
 // A SafeBrowingDatabase class that allows us to inject the malicious URLs.
 class TestSafeBrowsingDatabase :  public SafeBrowsingDatabase {
  public:
@@ skipping 824 matching lines @@
 // save cookies.
 IN_PROC_BROWSER_TEST_F(SafeBrowsingServiceCookieTest, TestSBUpdateCookies) {
   ui_test_utils::WindowedNotificationObserver observer(
       chrome::NOTIFICATION_SAFE_BROWSING_UPDATE_COMPLETE,
       content::Source<SafeBrowsingService>(sb_service_.get()));
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&SafeBrowsingServiceCookieTest::ForceUpdate, this));
   observer.Wait();
 }