Add request manage credentials to Settings

Background
* This is part of the work to support
  a credential management app on
  unmanaged devices.

Changes
* Add new activity to Settings to display
  a screen to the user requesting whether
  the calling app can manage their
  KeyChain credentials.
* Display the authentication policy

Manual Testing
* Verify screen is not displayed if intent
  action is not android.security.MANAGE_CREDENTIALS
* Verify screen is not displayed if authentication
  policy is not valid
* Verify button panel is visible if all items in the
  authentication policy are displayed
* Verify button panel is not visible if not all items
  in the authentication policy are displayed. Verify
  that scrolling to the bottom of the item list, the
  button panel becomes visible.

Bug: 165641221
Test: Manual testing
      make RunSettingsRoboTests -j ROBOTEST_FILTER=com.android.settings.security.RequestManageCredentialsTest
Change-Id: Ie23b226f1a285b3de6ec3e91b8880d9144bb24a3

src/com/android/settings/security/UriAuthenticationPolicyAdapter.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.security;
+
+import android.net.Uri;
+import android.security.AppUriAuthenticationPolicy;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.android.settings.R;
+
+import java.util.List;
+
+/**
+ * Child adapter for the requesting credential management app. This adapter displays the list of
+ * URIs for each app in the requesting app's authentication policy, when
+ * {@link RequestManageCredentials} is started.
+ *
+ * @hide
+ * @see CredentialManagementAppAdapter
+ * @see RequestManageCredentials
+ * @see AppUriAuthenticationPolicy
+ */
+public class UriAuthenticationPolicyAdapter extends
+        RecyclerView.Adapter<UriAuthenticationPolicyAdapter.UriViewHolder> {
+
+    private final List<Uri> mUris;
+
+    /**
+     * View holder for each URI which is part of the authentication policy in the
+     * request manage credentials screen.
+     */
+    public class UriViewHolder extends RecyclerView.ViewHolder {
+        TextView mUriNameView;
+
+        public UriViewHolder(@NonNull View view) {
+            super(view);
+            mUriNameView = itemView.findViewById(R.id.uri_name);
+        }
+    }
+
+    UriAuthenticationPolicyAdapter(List<Uri> uris) {
+        this.mUris = uris;
+    }
+
+    @Override
+    public UriAuthenticationPolicyAdapter.UriViewHolder onCreateViewHolder(ViewGroup parent,
+            int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(
+                R.layout.app_authentication_uri_item, parent, false);
+        return new UriViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(UriAuthenticationPolicyAdapter.UriViewHolder holder,
+            int position) {
+        Uri uri = mUris.get(position);
+        holder.mUriNameView.setText(uri.toString());
+    }
+
+    @Override
+    public int getItemCount() {
+        return mUris.size();
+    }
+}