Refactor fetching profile avatar icons and labels repeated md-settings & md-user-manager (C++)

chrome/browser/profiles/profile_avatar_icon_util.h

Index: chrome/browser/profiles/profile_avatar_icon_util.h
diff --git a/chrome/browser/profiles/profile_avatar_icon_util.h b/chrome/browser/profiles/profile_avatar_icon_util.h
index 8d7ed521b60af556c9d5d4960f0c6c22e24269a4..c7a4ff29bc3aebb862a0111e3d5ccca3030519ea 100644
--- a/chrome/browser/profiles/profile_avatar_icon_util.h
+++ b/chrome/browser/profiles/profile_avatar_icon_util.h
@@ -7,12 +7,14 @@
 
 #include <stddef.h>
 
+#include <memory>
 #include <string>
 
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace base {
 class FilePath;
+class ListValue;
 }
 
 namespace gfx {
@@ -107,6 +109,11 @@ bool IsDefaultAvatarIconUrl(const std::string& icon_url, size_t *icon_index);
 bool GetImageURLWithThumbnailSize(
     const GURL& old_url, int thumbnail_size, GURL* new_url);
 
+// Returns a list of dictionaries containing the default profile avatar icons as
+// well as avatar labels used for accessibility purposes. The list is ordered
+// according to the avatars' default order.
+std::unique_ptr<base::ListValue> GetDefaultProfileAvatarIconsAndLabels();
+
 }  // namespace profiles
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_AVATAR_ICON_UTIL_H_