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

src/com/android/launcher2/Workspace.java

@@ -2309,7 +2309,7 @@ public class Workspace extends SmoothPagedView
                         // that widget
                         final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo;
                         final PendingAddWidgetInfo createInfo =
-                                new PendingAddWidgetInfo(widgetInfo, mimeType, data, "11");
+                                new PendingAddWidgetInfo(widgetInfo, mimeType, data);
                         mLauncher.addAppWidgetFromDrop(createInfo,
                             LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentPage, null, pos);
                     } else {
@@ -2825,7 +2825,7 @@ public class Workspace extends SmoothPagedView
             case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
                 if (info.container == NO_ID && info instanceof ApplicationInfo) {
                     // Came from all apps -- make a copy
-                    info = new ShortcutInfo((ApplicationInfo) info, "12");
+                    info = new ShortcutInfo((ApplicationInfo) info);
                 }
                 view = mLauncher.createShortcut(R.layout.application, cellLayout,
                         (ShortcutInfo) info);