Add admin-set default apps to Enterprise Privacy Settings page

This CL adds information about the number of default handlers for
common intents (e.g. browser, e-mail, calendar) set by the admin.

Bug: 32692748
Test: make RunSettingsRoboTests

Change-Id: I569d9ddabeee2b2aa9a892b28066abb8bf920fcf

src/com/android/settings/applications/ApplicationFeatureProvider.java

@@ -17,8 +17,11 @@
 package com.android.settings.applications;
 
 import android.app.Fragment;
+import android.content.Intent;
 import android.view.View;
 
+import java.util.Set;
+
 public interface ApplicationFeatureProvider {
 
     /**
@@ -54,10 +57,48 @@ public interface ApplicationFeatureProvider {
     void calculateNumberOfAppsWithAdminGrantedPermissions(String[] permissions,
             NumberOfAppsCallback callback);
 
+    /**
+     * Return the persistent preferred activities configured by the admin for the current user and
+     * all its managed profiles. A persistent preferred activity is an activity that the admin
+     * configured to always handle a given intent (e.g. open browser), even if the user has other
+     * apps installed that would also be able to handle the intent.
+     *
+     * @param intent The intents for which to find persistent preferred activities
+     *
+     * @return the persistent preferred activites for the given intent
+     */
+    Set<PersistentPreferredActivityInfo> findPersistentPreferredActivities(Intent[] intents);
+
     /**
      * Callback that receives the number of packages installed on the device.
      */
     interface NumberOfAppsCallback {
         void onNumberOfAppsResult(int num);
     }
+
+    public static class PersistentPreferredActivityInfo {
+        public final String packageName;
+        public final int userId;
+
+        public PersistentPreferredActivityInfo(String packageName, int userId) {
+            this.packageName = packageName;
+            this.userId = userId;
+        }
+
+        @Override
+        public boolean equals(Object other) {
+            if (!(other instanceof PersistentPreferredActivityInfo)) {
+                return false;
+            }
+            final PersistentPreferredActivityInfo otherActivityInfo
+                    = (PersistentPreferredActivityInfo) other;
+            return otherActivityInfo.packageName.equals(packageName)
+                    && otherActivityInfo.userId == userId;
+        }
+
+        @Override
+        public int hashCode() {
+            return packageName.hashCode() ^ userId;
+        }
+    }
 }