arc: Add URL converter functions

chrome/browser/chromeos/fileapi/external_file_url_util_unittest.cc

Index: chrome/browser/chromeos/fileapi/external_file_url_util_unittest.cc
diff --git a/chrome/browser/chromeos/fileapi/external_file_url_util_unittest.cc b/chrome/browser/chromeos/fileapi/external_file_url_util_unittest.cc
index e166c085ce5343846ee9e1c7cd9556d1281f380d..61486959e2e1461ceb9ddda2dbcfcba9fe81e5ac 100644
--- a/chrome/browser/chromeos/fileapi/external_file_url_util_unittest.cc
+++ b/chrome/browser/chromeos/fileapi/external_file_url_util_unittest.cc
@@ -8,6 +8,7 @@
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "components/drive/file_system_core_util.h"
+#include "content/public/common/url_constants.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "storage/browser/fileapi/file_system_url.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -78,4 +79,12 @@ TEST_F(ExternalFileURLUtilTest, FilePathToExternalFileURL) {
                 .AsUTF8Unsafe());
 }
 
+TEST_F(ExternalFileURLUtilTest, VirtualPathToExternalFileURL) {
+  base::FilePath virtual_path(FILE_PATH_LITERAL("foo/bar012.txt"));
+  GURL result = VirtualPathToExternalFileURL(virtual_path);
+  EXPECT_TRUE(result.is_valid());
+  EXPECT_EQ(content::kExternalFileScheme, result.scheme());
+  EXPECT_EQ(virtual_path.value(), ExternalFileURLToVirtualPath(result).value());
+}
+
 }  // namespace chromeos