Make LiveWallpaperInfo package-private accessible

Make LiveWallpaperInfo's member functions package-private accessible to
extend its usage

Bug: 120519505
Test: LiveWallpaperInfo class can be inherited
Change-Id: I61e1d99ca93daec49ab02dc91821e22183429d88
diff --git a/src/com/android/wallpaper/model/LiveWallpaperInfo.java b/src/com/android/wallpaper/model/LiveWallpaperInfo.java
index 8944c3d..5fc3cea 100755
--- a/src/com/android/wallpaper/model/LiveWallpaperInfo.java
+++ b/src/com/android/wallpaper/model/LiveWallpaperInfo.java
@@ -87,7 +87,7 @@
         mVisibleTitle = visibleTitle;
     }
 
-    private LiveWallpaperInfo(Parcel in) {
+    LiveWallpaperInfo(Parcel in) {
         mInfo = in.readParcelable(android.app.WallpaperInfo.class.getClassLoader());
         mVisibleTitle = in.readInt() == 1;
     }
@@ -240,7 +240,7 @@
         return wallpaperInfos;
     }
 
-    private static boolean isSystemApp(ApplicationInfo appInfo) {
+    static boolean isSystemApp(ApplicationInfo appInfo) {
         return (appInfo.flags & (ApplicationInfo.FLAG_SYSTEM
                 | ApplicationInfo.FLAG_UPDATED_SYSTEM_APP)) != 0;
     }