move the provider authority to a config class

Bug: 10816034
Change-Id: I68364081f039f94205b805a1510eb04e6f0f40a2
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index 39afe10..d0f6770 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -49,8 +49,8 @@
 import android.util.Log;
 import android.util.Xml;
 
-import com.android.launcher3.LauncherSettings.BaseLauncherColumns;
 import com.android.launcher3.LauncherSettings.Favorites;
+import com.android.launcher3.config.ProviderConfig;
 
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
@@ -69,7 +69,7 @@
     private static final int DATABASE_VERSION = 15;
 
     static final String OLD_AUTHORITY = "com.android.launcher2.settings";
-    static final String AUTHORITY = "com.android.launcher3.settings";
+    static final String AUTHORITY = ProviderConfig.AUTHORITY;
 
     static final String TABLE_FAVORITES = "favorites";
     static final String TABLE_WORKSPACE_SCREENS = "workspaceScreens";