Make sandboxContext extend LauncherApplication (4/n)

See
https://docs.google.com/drawings/d/1JHFi_nhmQt2xPT1N3FB_1mnaRK5TVqKZ9-fSl3EA7sU/edit?usp=sharing
and
https://docs.google.com/drawings/d/1bx4WURP4uHZGzZ1bWQgpw701jkTkVqlNfA02Yt-ZtSI/edit?usp=sharing&resourcekey=0-oySjsnaCsOSrNIPqqEa0gw
for design details.

We need to make SandboxContext extend LauncherApplication because we
want create MainThreadInitializedObjects in SandboxContext's
AppComponent scope. Since MainThreadInitiliazedObjects are closed in
SandboxContext's OnDestroy() , we need to replicate same thing using
dagger as well.

- DaggerSingletonObject is same as MainThreadInitializedObject but is
  used for fetching the dagger created singletons so that we can avoid
  major refactors for accessing singletons. This will be deleted soon.

- DaggerSingletonTracker to track dagger created singletons and call
  close() on those singleton objects created in SandboxContext scope.

- Annotate the singleton object SettingsChangeLogger constructor with @Inject and execute the statements in Main thread.
- Added createSandboxContextForTest(only for Test) to avoid creation of
  dagger component in test. As follow up, I will delete this method and
  introduce fakeDaggerComponents in test.

Bug: 361850561
Test: Manual
Flag: NONE Dagger Integration

Change-Id: I2d3762ea64e53baa4de190790568aec750b54201

src/com/android/launcher3/util/MainThreadInitializedObject.java

@@ -18,13 +18,13 @@ package com.android.launcher3.util;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 
 import android.content.Context;
-import android.content.ContextWrapper;
 import android.os.Looper;
 import android.util.Log;
 
 import androidx.annotation.UiThread;
 import androidx.annotation.VisibleForTesting;
 
+import com.android.launcher3.LauncherApplication;
 import com.android.launcher3.util.ResourceBasedOverride.Overrides;
 
 import java.util.ArrayList;
@@ -118,7 +118,7 @@ public class MainThreadInitializedObject<T extends SafeCloseable> {
      * Abstract Context which allows custom implementations for
      * {@link MainThreadInitializedObject} providers
      */
-    public static class SandboxContext extends ContextWrapper implements SandboxApplication {
+    public static class SandboxContext extends LauncherApplication implements SandboxApplication {
 
         private static final String TAG = "SandboxContext";
 
@@ -129,7 +129,8 @@ public class MainThreadInitializedObject<T extends SafeCloseable> {
         private boolean mDestroyed = false;
 
         public SandboxContext(Context base) {
-            super(base);
+            attachBaseContext(base);
+            initDagger();
         }
 
         @Override
@@ -138,6 +139,7 @@ public class MainThreadInitializedObject<T extends SafeCloseable> {
         }
 
         public void onDestroy() {
+            getAppComponent().getDaggerSingletonTracker().close();
             synchronized (mDestroyLock) {
                 // Destroy in reverse order
                 for (int i = mOrderedObjects.size() - 1; i >= 0; i--) {