Removing dependency on wallpaper size settings from launcher

> Moving wallpaper desired width calculation to xml

Bug: 14470153
Change-Id: I8803af158861507a40e5d55e9aa6d515be47eefa
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index ee25e81..3969d30 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -119,6 +119,9 @@
     public static final boolean ATLEAST_JB_MR2 =
             Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
 
+    // An intent extra to indicate the horizontal scroll of the wallpaper.
+    public static final String EXTRA_WALLPAPER_OFFSET = "com.android.launcher3.WALLPAPER_OFFSET";
+
     // These values are same as that in {@link AsyncTask}.
     private static final int CPU_COUNT = Runtime.getRuntime().availableProcessors();
     private static final int CORE_POOL_SIZE = CPU_COUNT + 1;