Prettify Mac names, rewrite getDisplayPath API call to focus on $HOME

chrome/browser/extensions/api/file_system/file_system_apitest.cc

Index: chrome/browser/extensions/api/file_system/file_system_apitest.cc
diff --git a/chrome/browser/extensions/api/file_system/file_system_apitest.cc b/chrome/browser/extensions/api/file_system/file_system_apitest.cc
index 0bc334da3a5cf8df4fe9f09d813f275b431ab32d..c478b644a0cfeb796c72f13d140fcfaebd9e3ac1 100644
--- a/chrome/browser/extensions/api/file_system/file_system_apitest.cc
+++ b/chrome/browser/extensions/api/file_system/file_system_apitest.cc
@@ -58,6 +58,7 @@ IN_PROC_BROWSER_TEST_F(FileSystemApiTest, FileSystemApiGetDisplayPathPrettify) {
   ASSERT_TRUE(PathService::OverrideAndCreateIfNeeded(override,
       test_root_folder_, false));
 
+  // TODO: this should be the ..._prettify_home test.
   FilePath test_file = test_root_folder_.AppendASCII("gold.txt");
   FileSystemChooseFileFunction::SkipPickerAndAlwaysSelectPathForTest(
       &test_file);
@@ -66,6 +67,35 @@ IN_PROC_BROWSER_TEST_F(FileSystemApiTest, FileSystemApiGetDisplayPathPrettify) {
 }
 #endif
 
+#if defined(OS_MACOSX)
+IN_PROC_BROWSER_TEST_F(FileSystemApiTest,
+    FileSystemApiGetDisplayPathPrettifyMac) {
+  ASSERT_TRUE(PathService::OverrideAndCreateIfNeeded(base::DIR_DESKTOP,
+      test_root_folder_, false));
+
+  // TODO: The displayName of this folder is going to be "file_system", because it's not a real user-relevant folder to OS X.
+
+  FilePath test_file = test_root_folder_.AppendASCII("gold.txt");
+  FileSystemChooseFileFunction::SkipPickerAndAlwaysSelectPathForTest(
+      &test_file);
+  ASSERT_TRUE(RunPlatformAppTest(
+      "api_test/file_system/get_display_path_prettify_mac")) << message_;
+
+  // TODO: I don't think the test code likes creating filesystems outside the test folders. :(
+#if 0
+  FilePath test_file;
+  ASSERT_TRUE(PathService::Get(base::DIR_DOCUMENTS, &test_file));
+  test_file = test_file.AppendASCII("gold.txt");
+
+  // TODO: this should be the generic test, we just confirm that it's a relative path.
+  FileSystemChooseFileFunction::SkipPickerAndAlwaysSelectPathForTest(
+      &test_file);
+  ASSERT_TRUE(RunPlatformAppTest(
+      "api_test/file_system/get_display_path_prettify_mac")) << "could not run STUFF";
+#endif
+}
+#endif
+
 IN_PROC_BROWSER_TEST_F(FileSystemApiTest, FileSystemApiOpenExistingFileTest) {
   FilePath test_file = TempFilePath("open_existing.txt", true);
   ASSERT_FALSE(test_file.empty());