cros: Change character limit of folders.

Change character limit of folders from 80 to 28. 80 is considered too large.

Bug: 869643
Change-Id: I05d88ea55094d9a9d175740c16ed429b1ad5a53b
Reviewed-on: https://chromium-review.googlesource.com/1176643Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Daniel Zhang <oxyflush@google.com>
Cr-Commit-Position: refs/heads/master@{#583715}

ash/public/cpp/app_list/app_list_constants.cc

@@ -114,7 +114,7 @@ const size_t kMaxFolderPages = 3;
 const size_t kMaxFolderItemsPerPage = 16;
 
 // Maximum length of the folder name in chars.
-const size_t kMaxFolderNameChars = 80;
+const size_t kMaxFolderNameChars = 28;
 
 // Font style for app item labels.
 const ui::ResourceBundle::FontStyle kItemTextFontStyle =