Files.app: Create unit tests for MetadataCache.

chrome/browser/chromeos/file_manager/file_manager_jstest.cc

Index: chrome/browser/chromeos/file_manager/file_manager_jstest.cc
diff --git a/chrome/browser/chromeos/file_manager/file_manager_jstest.cc b/chrome/browser/chromeos/file_manager/file_manager_jstest.cc
index a4cddc1d934625427517125f4ebced7230876599..67b70011a56ccc4ba61594c431ba9bb4bf9ef9a3 100644
--- a/chrome/browser/chromeos/file_manager/file_manager_jstest.cc
+++ b/chrome/browser/chromeos/file_manager/file_manager_jstest.cc
@@ -48,6 +48,10 @@ IN_PROC_BROWSER_TEST_F(
 
 IN_PROC_BROWSER_TEST_F(
     FileManagerJsTest, DeviceHandlerTest) {
-  RunTest(base::FilePath(
-      FILE_PATH_LITERAL("device_handler_unittest.html")));
+  RunTest(base::FilePath(FILE_PATH_LITERAL("device_handler_unittest.html")));
+}
+
+IN_PROC_BROWSER_TEST_F(
+    FileManagerJsTest, MetadataCacheTest) {
+  RunTest(base::FilePath(FILE_PATH_LITERAL("metadata_cache_unittest.html")));
 }