Fix RoleSearchIndexablesProvider.

By clearing the calling identity before determining whether a role is
available, to avoid the SecurityException.

Bug: 135665821
Test: manual
Change-Id: Ibee46949c65a5cd068a5453ca053025108da2096

src/com/android/packageinstaller/role/service/RoleSearchIndexablesProvider.java

diff --git a/src/com/android/packageinstaller/role/service/RoleSearchIndexablesProvider.java b/src/com/android/packageinstaller/role/service/RoleSearchIndexablesProvider.java
index 5507627..4d5341c 100644
--- a/src/com/android/packageinstaller/role/service/RoleSearchIndexablesProvider.java
+++ b/src/com/android/packageinstaller/role/service/RoleSearchIndexablesProvider.java
@@ -19,6 +19,7 @@
 import android.content.Context;
 import android.database.Cursor;
 import android.database.MatrixCursor;
+import android.os.Binder;
 import android.provider.SearchIndexablesContract;
 import android.util.ArrayMap;
 
@@ -50,8 +51,13 @@
         for (int i = 0; i < rolesSize; i++) {
             Role role = roles.valueAt(i);
 
-            if (!role.isAvailable(context) || !role.isVisible(context)) {
-                continue;
+            long token = Binder.clearCallingIdentity();
+            try {
+                if (!role.isAvailable(context) || !role.isVisible(context)) {
+                    continue;
+                }
+            } finally {
+                Binder.restoreCallingIdentity(token);
             }
 
             String label = context.getString(role.getLabelResource());