Revert "Use system-api lib to get badged, shadowed icons(2/n)"

This reverts commit dbecbe6f61.

Reason for revert: b/149112222

Change-Id: I11981b2daacf8b07177fe906d88de05ca40810c1

tests/robotests/src/com/android/settings/widget/EntityHeaderControllerTest.java

@@ -30,6 +30,7 @@ import android.app.ActionBar;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
+import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.ResolveInfo;
 import android.graphics.drawable.ColorDrawable;
@@ -37,6 +38,7 @@ import android.os.UserHandle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.ImageButton;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import androidx.fragment.app.Fragment;
@@ -44,6 +46,7 @@ import androidx.fragment.app.FragmentActivity;
 import androidx.preference.Preference;
 
 import com.android.settings.R;
+import com.android.settingslib.applications.ApplicationsState;
 import com.android.settingslib.widget.LayoutPreference;
 
 import org.junit.Before;
@@ -254,6 +257,20 @@ public class EntityHeaderControllerTest {
                 .isEqualTo(description);
     }
 
+    @Test
+    public void setIcon_usingAppEntry_shouldLoadIconFromDrawableFactory() {
+        final View view = mLayoutInflater
+                .inflate(R.layout.settings_entity_header, null /* root */);
+        final ApplicationsState.AppEntry entry = mock(ApplicationsState.AppEntry.class);
+        entry.info = new ApplicationInfo();
+        mController = EntityHeaderController.newInstance(mActivity, mFragment, view);
+        mController.setIcon(entry).done(mActivity);
+        final ImageView iconView = view.findViewById(R.id.entity_header_icon);
+
+        // ... entry.icon is still empty. This means the icon didn't come from cache.
+        assertThat(entry.icon).isNull();
+    }
+
     @Test
     public void bindButton_hasAppNotifIntent_shouldShowButton() {
         final View appLinks = mLayoutInflater