Revert of Reapply "Media Galleries API Metadata: Image metadata"

chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc

Index: chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
diff --git a/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc b/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
index 845f51e18ab887fbc299370480cead8123135457..b8ce16521f07261ee14292201da3b7d696cdc12b 100644
--- a/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
+++ b/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
@@ -372,11 +372,6 @@
                          .AppendASCII("common");
   }
 
-  base::FilePath GetWallpaperTestDataDir() const {
-    return test_data_dir_.AppendASCII("api_test")
-                         .AppendASCII("wallpaper");
-  }
-
   int num_galleries() const {
     return ensure_media_directories_exists_->num_galleries();
   }
@@ -612,7 +607,6 @@
 
   AddFileToSingleFakeGallery(media::GetTestDataFilePath("90rotation.mp4"));
   AddFileToSingleFakeGallery(media::GetTestDataFilePath("id3_png_test.mp3"));
-  AddFileToSingleFakeGallery(GetWallpaperTestDataDir().AppendASCII("test.jpg"));
 
   base::ListValue custom_args;
 #if defined(USE_PROPRIETARY_CODECS)