[fsp] Group arguments for mounting into a struct.

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

Index: chrome/browser/chromeos/file_system_provider/operations/truncate_unittest.cc
diff --git a/chrome/browser/chromeos/file_system_provider/operations/truncate_unittest.cc b/chrome/browser/chromeos/file_system_provider/operations/truncate_unittest.cc
index 92e2d611c3a7f4b20a19e793cae29bcda36d9663..bb0fcbcfb6f16d6fe55d59ed1caa8c2f8f16c0a5 100644
--- a/chrome/browser/chromeos/file_system_provider/operations/truncate_unittest.cc
+++ b/chrome/browser/chromeos/file_system_provider/operations/truncate_unittest.cc
@@ -38,13 +38,10 @@ class FileSystemProviderOperationsTruncateTest : public testing::Test {
   virtual ~FileSystemProviderOperationsTruncateTest() {}
 
   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_;
@@ -108,10 +105,7 @@ TEST_F(FileSystemProviderOperationsTruncateTest, 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 */);
 
   Truncate truncate(NULL,