Declare official platform slice

Create the notion of an official platform slice.
This includes:
- Adding a second authority to the provider
- tagging slices in xml with a platform slice flag
- Including authority in the getUri method

Bug:73359139
Test: robotests
Change-Id: I5382be138a262dbc5a8324c34aab131c5d0d5516
Merged-In: I581ee6dfcdf935f452a15e89e5d055e375ff1877

src/com/android/settings/slices/SliceBuilderUtils.java

@@ -19,9 +19,12 @@ package com.android.settings.slices;
 import static com.android.settings.slices.SettingsSliceProvider.EXTRA_SLICE_KEY;
 
 import android.app.PendingIntent;
+import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.drawable.Icon;
+import android.net.Uri;
+import android.provider.SettingsSlicesContract;
 import android.text.TextUtils;
 
 import com.android.internal.annotations.VisibleForTesting;
@@ -98,6 +101,17 @@ public class SliceBuilderUtils {
                 sliceData.getKey());
     }
 
+    public static Uri getUri(String path, boolean isPlatformSlice) {
+        final String authority = isPlatformSlice
+                ? SettingsSlicesContract.AUTHORITY
+                : SettingsSliceProvider.SLICE_AUTHORITY;
+        return new Uri.Builder()
+                .scheme(ContentResolver.SCHEME_CONTENT)
+                .authority(authority)
+                .appendPath(path)
+                .build();
+    }
+
     private static BasePreferenceController getPreferenceController(Context context,
             String controllerClassName, String controllerKey) {
         try {