Storing BitmapInfo instead of icon and color directly in itemInfo

This will allow subclassing BitmapInfo to support custom icon/dynamic
icons which can be loaded on the background thread instead of going
through IconFactory which runs on UiThread

Change-Id: Ieced6e91330bdff1b505826d097a8df711dfe967

src/com/android/launcher3/model/ShortcutsChangedTask.java

@@ -93,8 +93,8 @@ public class ShortcutsChangedTask extends BaseModelUpdateTask {
                     // If the shortcut is pinned but no longer has an icon in the system,
                     // keep the current icon instead of reverting to the default icon.
                     LauncherIcons li = LauncherIcons.obtain(context);
-                    workspaceItemInfo.applyFrom(li.createShortcutIcon(fullDetails, true,
-                            () -> workspaceItemInfo));
+                    workspaceItemInfo.bitmap = li.createShortcutIcon(
+                            fullDetails, true, () -> workspaceItemInfo);
                     li.recycle();
                     updatedWorkspaceItemInfos.add(workspaceItemInfo);
                 }