Gallery: Filter out video files in the gallery.

BUG=384944
TEST=manually
R=yoshiki@chromium.org

Review URL: https://codereview.chromium.org/345853004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278592 0039d316-1c4b-4281-b951-d872f2087c98

ui/file_manager/gallery/js/background.js

@@ -160,7 +160,7 @@ function launch(selectedEntriesPromise) {
     if (entries.length === 1) {
       var parentPromise = new Promise(entries[0].getParent.bind(entries[0]));
       return parentPromise.then(getChildren).then(function(entries) {
-        return entries.filter(FileType.isImageOrVideo);
+        return entries.filter(FileType.isImage);
       });
     } else {
       return entries;