[Files.app] Add tests of opening Gallery from Files.app

chrome/browser/chromeos/file_manager/file_manager_browsertest.cc

Index: chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
diff --git a/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc b/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
index bb426f89481b9d264740645d021dd2cccbc2af2b..cafd16368929957d5559a888f6dca1fc1b1dbfc5 100644
--- a/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
+++ b/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
@@ -868,6 +868,20 @@ WRAPPED_INSTANTIATE_TEST_CASE_P(
         TestParameter(NOT_IN_GUEST_MODE, "audioNoRepeatMultipleFileDrive")));
 
 // Slow tests are disabled on debug build. http://crbug.com/327719
+// Fails on official build. http://crbug.com/429294
+#if !defined(NDEBUG) || defined(OFFICIAL_BUILD)
+#define MAYBE_OpenImageFiles DISABLED_OpenImageFiles
+#else
+#define MAYBE_OpenImageFiles OpenImageFiles
+#endif
+WRAPPED_INSTANTIATE_TEST_CASE_P(
+    MAYBE_OpenImageFiles,
+    FileManagerBrowserTest,
+    ::testing::Values(TestParameter(IN_GUEST_MODE, "imageOpenDownloads"),
+                      TestParameter(NOT_IN_GUEST_MODE, "imageOpenDownloads"),
+                      TestParameter(NOT_IN_GUEST_MODE, "imageOpenDrive")));
+
+// Slow tests are disabled on debug build. http://crbug.com/327719
 #if !defined(NDEBUG) || defined(OFFICIAL_BUILD)
 #define MAYBE_CreateNewFolder DISABLED_CreateNewFolder
 #else