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 b8ce16521f07261ee14292201da3b7d696cdc12b..845f51e18ab887fbc299370480cead8123135457 100644
--- a/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
+++ b/chrome/browser/extensions/api/media_galleries/media_galleries_apitest.cc
@@ -372,6 +372,11 @@ class MediaGalleriesPlatformAppBrowserTest : public PlatformAppBrowserTest {
                          .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();
   }
@@ -607,6 +612,7 @@ IN_PROC_BROWSER_TEST_F(MediaGalleriesPlatformAppBrowserTest, GetMetadata) {
 
   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)