Fix shared storage namespace in DecryptAll class

lib/private/Encryption/DecryptAll.php

@@ -210,7 +210,7 @@ class DecryptAll {
 			$content = $this->rootView->getDirectoryContent($root);
 			foreach ($content as $file) {
 				// only decrypt files owned by the user
-				if($file->getStorage()->instanceOfStorage('OC\Files\Storage\Shared')) {
+				if($file->getStorage()->instanceOfStorage('OCA\Files_Sharing\SharedStorage')) {
 						continue;
 				}
 				$path = $root . '/' . $file['name'];

tests/lib/Encryption/DecryptAllTest.php

@@ -239,7 +239,7 @@ class DecryptAllTest extends TestCase {
 	}
 
 	public function testDecryptUsersFiles() {
-		$storage = $this->getMockBuilder('OC\Files\Storage\Shared')
+		$storage = $this->getMockBuilder('OCA\Files_Sharing\SharedStorage')
 			->disableOriginalConstructor()
 			->getMock();