Cleaning up LauncherModel

- performing all DB operations immediately if called from worker thread (a previous change that did this in updateItemInDatabase fixed an outstanding bug)
- centralizing logic to do database updates
- removing old logging code

Change-Id: Idc7bfef3921828ff7c5492b8e996c0a07e1ec508
diff --git a/src/com/android/launcher2/LauncherAppWidgetInfo.java b/src/com/android/launcher2/LauncherAppWidgetInfo.java
index 69eae17..844abb5 100644
--- a/src/com/android/launcher2/LauncherAppWidgetInfo.java
+++ b/src/com/android/launcher2/LauncherAppWidgetInfo.java
@@ -51,8 +51,7 @@
     /**
      * Constructor for use with AppWidgets that haven't been instantiated yet.
      */
-    LauncherAppWidgetInfo(ComponentName providerName, String whereCreated) {
-        super(whereCreated);
+    LauncherAppWidgetInfo(ComponentName providerName) {
         itemType = LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET;
         this.providerName = providerName;
 
@@ -62,8 +61,7 @@
         spanY = -1;
     }
 
-    LauncherAppWidgetInfo(int appWidgetId, String whereCreated) {
-        super(whereCreated);
+    LauncherAppWidgetInfo(int appWidgetId) {
         itemType = LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET;
         this.appWidgetId = appWidgetId;
     }