fix fatal error that API is already in use

plugins/Overlay/Controller.php

@@ -17,7 +17,7 @@ use Piwik\Metrics;
 use Piwik\MetricsFormatter;
 use Piwik\Piwik;
 use Piwik\Plugins\Actions\ArchivingHelper;
-use Piwik\Plugins\SitesManager\API;
+use Piwik\Plugins\SitesManager\API as APISitesManager;
 use Piwik\ProxyHttp;
 use Piwik\Tracker\Action;
 use Piwik\View;
@@ -130,7 +130,7 @@ class Controller extends \Piwik\Controller
         $idSite = Common::getRequestVar('idsite', 0, 'int');
         Piwik::checkUserHasViewAccess($idSite);
 
-        $sitesManager = API::getInstance();
+        $sitesManager = APISitesManager::getInstance();
         $site = $sitesManager->getSiteFromId($idSite);
         $urls = $sitesManager->getSiteUrlsFromId($idSite);
 

plugins/UserCountryMap/Controller.php

@@ -14,7 +14,7 @@ use Exception;
 use Piwik\API\Request;
 use Piwik\Piwik;
 use Piwik\Common;
-use Piwik\Plugins\Goals\API;
+use Piwik\Plugins\Goals\API as APIGoals;
 use Piwik\ViewDataTable;
 use Piwik\View;
 use Piwik\Site;
@@ -134,7 +134,7 @@ class Controller extends \Piwik\Controller
         $view->defaultMetric = 'nb_visits';
         $liveRefreshAfterMs = (int)Config::getInstance()->General['live_widget_refresh_after_seconds'] * 1000;
 
-        $goals = API::getInstance()->getGoals($idSite);
+        $goals = APIGoals::getInstance()->getGoals($idSite);
         $site = new Site($idSite);
         $hasGoals = !empty($goals) || $site->isEcommerceEnabled();
 

plugins/VisitsSummary/Controller.php

@@ -15,7 +15,7 @@ use Piwik\DataTable\Row;
 use Piwik\Piwik;
 use Piwik\Common;
 use Piwik\DataTable;
-use Piwik\Plugins\Actions\API;
+use Piwik\Plugins\Actions\API as APIActions;
 use Piwik\ViewDataTable;
 use Piwik\View;
 use Piwik\Site;
@@ -140,7 +140,7 @@ class Controller extends \Piwik\Controller
         $dataTableVisit = self::getVisitsSummary();
         $dataRow = $dataTableVisit->getRowsCount() == 0 ? new Row() : $dataTableVisit->getFirstRow();
 
-        $dataTableActions = API::getInstance()->get($idSite, Common::getRequestVar('period'), Common::getRequestVar('date'),
+        $dataTableActions = APIActions::getInstance()->get($idSite, Common::getRequestVar('period'), Common::getRequestVar('date'),
             \Piwik\API\Request::getRawSegmentFromRequest());
         $dataActionsRow =
             $dataTableActions->getRowsCount() == 0 ? new Row() : $dataTableActions->getFirstRow();