added some missing use statements

tests/PHPUnit/BenchmarkTestCase.php

@@ -8,6 +8,7 @@
 use Piwik\Config;
 use Piwik\Db;
 use Piwik\Plugins\Goals\API;
+use Piwik\Tests\Fixture;
 
 require_once PIWIK_INCLUDE_PATH . '/tests/PHPUnit/IntegrationTestCase.php';
 require_once PIWIK_INCLUDE_PATH . '/tests/LocalTracker.php';
@@ -20,7 +21,7 @@ foreach (glob(PIWIK_INCLUDE_PATH . '/tests/PHPUnit/Benchmarks/Fixtures/*.php') a
 /**
  * Base class for benchmarks.
  */
-abstract class BenchmarkTestCase extends IntegrationTestCase
+abstract class BenchmarkTestCase extends \Piwik\Tests\IntegrationTestCase
 {
     protected static $fixture;
 

tests/PHPUnit/Benchmarks/Fixtures/ManyThousandSitesOneVisitEach.php

@@ -7,6 +7,7 @@
  */
 use Piwik\Date;
 use Piwik\Plugins\Goals\API;
+use Piwik\Tests\Fixture;
 
 /**
  * Reusable fixture. Adds 20,000 sites and tracks one pageview for each on one day.

tests/PHPUnit/Benchmarks/Fixtures/OneSiteThousandsOfDistinctUrlsOverMonth.php

@@ -7,6 +7,7 @@
  */
 use Piwik\Date;
 use Piwik\Plugins\Goals\API;
+use Piwik\Tests\Fixture;
 
 /**
  * Adds one site and 1000 actions for every day of one month (January). Each

tests/PHPUnit/Benchmarks/Fixtures/OneSiteTwelveThousandVisitsOneYear.php

@@ -7,6 +7,7 @@
  */
 use Piwik\Date;
 use Piwik\Plugins\Goals\API;
+use Piwik\Tests\Fixture;
 
 /**
  * Reusable fixture. Tracks twelve thousand page views over a year for one site.

tests/PHPUnit/Benchmarks/Fixtures/ThousandSitesTwelveVisitsEachOneDay.php

@@ -7,6 +7,7 @@
  */
 use Piwik\Date;
 use Piwik\Plugins\Goals\API as APIGoals;
+use Piwik\Tests\Fixture;
 
 /**
  * Reusable fixture. Tracks twelve thousand page views for 1000 sites on one day.