Disable model loading with Sandbox check instead of static boolean.

The static boolean also affects Taskbar within the Launcher process. We
only want this disabled for the Taskbar test Sandbox.

Flag: TEST_ONLY
Bug: 230027385
Test: NexusLauncherTests:com.android.launcher3.taskbar
Change-Id: Ife12e95ab34755d1aec42d79188c15232d8da092

quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java

@@ -84,6 +84,7 @@ import com.android.launcher3.taskbar.bubbles.BubbleBarController;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.ItemInfoMatcher;
 import com.android.launcher3.util.LauncherBindableItemsContainer;
+import com.android.launcher3.util.MainThreadInitializedObject.SandboxContext;
 import com.android.launcher3.util.MultiPropertyFactory;
 import com.android.launcher3.util.MultiPropertyFactory.MultiProperty;
 import com.android.launcher3.util.MultiTranslateDelegate;
@@ -131,8 +132,6 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
     private static final int TRANSITION_FADE_IN_DURATION = 167;
     private static final int TRANSITION_FADE_OUT_DURATION = 83;
 
-    private static boolean sEnableModelLoadingForTests = true;
-
     private final TaskbarActivityContext mActivity;
     private final TaskbarView mTaskbarView;
     private final MultiValueAlpha mTaskbarIconAlpha;
@@ -244,7 +243,8 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
         mTaskbarIconTranslationXForPinning.updateValue(pinningValue);
 
         mModelCallbacks.init(controllers);
-        if (mActivity.isUserSetupComplete() && sEnableModelLoadingForTests) {
+        if (mActivity.isUserSetupComplete()
+                && !(mActivity.getApplicationContext() instanceof SandboxContext)) {
             // Only load the callbacks if user setup is completed
             controllers.runAfterInit(() -> LauncherAppState.getInstance(mActivity).getModel()
                     .addCallbacksAndLoad(mModelCallbacks));
@@ -1217,12 +1217,6 @@ public class TaskbarViewController implements TaskbarControllers.LoggableTaskbar
         mModelCallbacks.dumpLogs(prefix + "\t", pw);
     }
 
-    /** Enables model loading for tests. */
-    @VisibleForTesting
-    public static void enableModelLoadingForTests(boolean enable) {
-        sEnableModelLoadingForTests = enable;
-    }
-
     private ObjectAnimator createTaskbarIconsShiftAnimator(float translationX) {
         ObjectAnimator animator = mIconsTranslationXForNavbar.animateToValue(translationX);
         animator.setStartDelay(FADE_OUT_ANIM_POSITION_DURATION_MS);