Fix the Launcher3Tests

Bug: 78589564

$ adb shell am instrument -w com.android.launcher3.tests/android.support.test.runner.AndroidJUnitRunner

com.android.launcher3.allapps.search.DefaultAppSearchAlgorithmTest:..
com.android.launcher3.logging.FileLogTest:..
com.android.launcher3.model.AddWorkspaceItemsTaskTest:....
com.android.launcher3.model.CacheDataUpdatedTaskTest:...
com.android.launcher3.model.DbDowngradeHelperTest:....
com.android.launcher3.model.GridSizeMigrationTaskTest:...........
com.android.launcher3.model.LoaderCursorTest:........
com.android.launcher3.model.PackageInstallStateChangedTaskTest:...
com.android.launcher3.popup.PopupPopulatorTest:..
com.android.launcher3.provider.RestoreDbTaskTest:..
com.android.launcher3.touch.SwipeDetectorTest:.....
com.android.launcher3.ui.AllAppsAppLaunchTest:..
com.android.launcher3.ui.AllAppsIconToHomeTest:..
com.android.launcher3.ui.ShortcutsLaunchTest:..
com.android.launcher3.ui.ShortcutsToHomeTest:..
com.android.launcher3.ui.WorkTabTest:.
com.android.launcher3.ui.widget.AddConfigWidgetTest:....
com.android.launcher3.ui.widget.AddWidgetTest:..
com.android.launcher3.ui.widget.BindWidgetTest:......
com.android.launcher3.ui.widget.RequestPinItemTest:.
com.android.launcher3.util.GridOccupancyTest:..
com.android.launcher3.widget.WidgetsListAdapterTest:......

Time: 180.363
OK (76 test)

Change-Id: I4a50581bc8d06a030467ac9fec3e1ef668745214