Add gallery browser tests to delete an image in the slide mode.

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 f4474186fc9a1ff4abc3b060acac397ee14e5ab5..23ce0fcf1c3eb84086c2c1623b96e66645ae0b77 100644
--- a/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
+++ b/chrome/browser/chromeos/file_manager/file_manager_browsertest.cc
@@ -1319,7 +1319,6 @@ IN_PROC_BROWSER_TEST_F(GalleryBrowserTest, TraverseSlideImagesOnDrive) {
 }
 
 IN_PROC_BROWSER_TEST_F(GalleryBrowserTest, RenameImageOnDownloads) {
-  AddScript("gallery/test_util.js");
   AddScript("gallery/slide_mode.js");
   set_test_case_name("renameImageOnDownloads");
   StartTest();
@@ -1327,18 +1326,35 @@ IN_PROC_BROWSER_TEST_F(GalleryBrowserTest, RenameImageOnDownloads) {
 
 IN_PROC_BROWSER_TEST_F(GalleryBrowserTestInGuestMode,
                        RenameImageOnDownloads) {
-  AddScript("gallery/test_util.js");
   AddScript("gallery/slide_mode.js");
   set_test_case_name("renameImageOnDownloads");
   StartTest();
 }
 
 IN_PROC_BROWSER_TEST_F(GalleryBrowserTest, RenameImageOnDrive) {
-  AddScript("gallery/test_util.js");
   AddScript("gallery/slide_mode.js");
   set_test_case_name("renameImageOnDrive");
   StartTest();
 }
 
+IN_PROC_BROWSER_TEST_F(GalleryBrowserTest, DeleteImageOnDownloads) {
+  AddScript("gallery/slide_mode.js");
+  set_test_case_name("deleteImageOnDownloads");
+  StartTest();
+}
+
+IN_PROC_BROWSER_TEST_F(GalleryBrowserTestInGuestMode,
+                       DeleteImageOnDownloads) {
+  AddScript("gallery/slide_mode.js");
+  set_test_case_name("deleteImageOnDownloads");
+  StartTest();
+}
+
+IN_PROC_BROWSER_TEST_F(GalleryBrowserTest, DeleteImageOnDrive) {
+  AddScript("gallery/slide_mode.js");
+  set_test_case_name("deleteImageOnDrive");
+  StartTest();
+}
+
 }  // namespace
 }  // namespace file_manager