[fsp] Group arguments for mounting into a struct.

chrome/browser/chromeos/file_system_provider/operations/create_directory_unittest.cc

Index: chrome/browser/chromeos/file_system_provider/operations/create_directory_unittest.cc
diff --git a/chrome/browser/chromeos/file_system_provider/operations/create_directory_unittest.cc b/chrome/browser/chromeos/file_system_provider/operations/create_directory_unittest.cc
index 7ae1d7f1e1090fec3ee9863ad8000b76e70c12c9..19b1d416f6947b3d0d397002d47dd882474cc968 100644
--- a/chrome/browser/chromeos/file_system_provider/operations/create_directory_unittest.cc
+++ b/chrome/browser/chromeos/file_system_provider/operations/create_directory_unittest.cc
@@ -37,13 +37,10 @@ class FileSystemProviderOperationsCreateDirectoryTest : public testing::Test {
   virtual ~FileSystemProviderOperationsCreateDirectoryTest() {}
 
   virtual void SetUp() override {
+    MountOptions mount_options(kFileSystemId, "" /* display_name */);
+    mount_options.writable = true;
     file_system_info_ =
-        ProvidedFileSystemInfo(kExtensionId,
-                               kFileSystemId,
-                               "" /* file_system_name */,
-                               true /* writable */,
-                               false /* supports_notify_tag */,
-                               base::FilePath() /* mount_path */);
+        ProvidedFileSystemInfo(kExtensionId, mount_options, base::FilePath());
   }
 
   ProvidedFileSystemInfo file_system_info_;
@@ -110,10 +107,7 @@ TEST_F(FileSystemProviderOperationsCreateDirectoryTest, Execute_ReadOnly) {
 
   const ProvidedFileSystemInfo read_only_file_system_info(
       kExtensionId,
-      kFileSystemId,
-      "" /* file_system_name */,
-      false /* writable */,
-      false /* supports_notify_tag */,
+      MountOptions(kFileSystemId, "" /* display_name */),
       base::FilePath() /* mount_path */);
 
   CreateDirectory create_directory(