Add 'OCP\Files\IMimeTypeDetector' to DI container

* Added test to server container as well

lib/private/appframework/dependencyinjection/dicontainer.php

@@ -165,6 +165,10 @@ class DIContainer extends SimpleContainer implements IAppContainer {
 		$this->registerAlias('OCP\\AppFramework\\Utility\\IControllerMethodReflector', 'OC\AppFramework\Utility\ControllerMethodReflector');
 		$this->registerAlias('ControllerMethodReflector', 'OCP\\AppFramework\\Utility\\IControllerMethodReflector');
 
+		$this->registerService('OCP\\Files\\IMimeTypeDetector', function($c) {
+			return $this->getServer()->getMimeTypeDetector();
+		});
+
 		$this->registerService('OCP\\INavigationManager', function($c) {
 			return $this->getServer()->getNavigationManager();
 		});

tests/lib/server.php

@@ -94,6 +94,8 @@ class Server extends \Test\TestCase {
 			['HttpClientService', '\OCP\Http\Client\IClientService'],
 
 			['IniWrapper', '\bantu\IniGetWrapper\IniGetWrapper'],
+			['MimeTypeDetector', '\OCP\Files\IMimeTypeDetector'],
+			['MimeTypeDetector', '\OC\Files\Type\Detection'],
 
 			['JobList', '\OC\BackgroundJob\JobList'],
 			['JobList', '\OCP\BackgroundJob\IJobList'],