Stub out feature flag UI

Bug: 36222960
Test: make -j40 RunSettingsRoboTests
Change-Id: Id2483d39018b2d93868f4ef7032124795ea91a53

res/values/strings.xml

@@ -4274,6 +4274,8 @@
     <string name="user_installed_services_category_title">Downloaded services</string>
     <!-- Title for the accessibility preference category of settings considered to be experimental, meaning they might be changed or removed in the future. [CHAR LIMIT=50] -->
     <string name="experimental_category_title">Experimental</string>
+    <!-- Title for feature flags dashboard DO NOT TRANSLATE -->
+    <string name="feature_flags_dashboard_title" translatable="false">Feature flags</string>
     <!-- Title for the Talkback Accessibility Service. Displayed on the Accessibility Settings screen in Setup Wizard. [CHAR_LIMIT=25] -->
     <string name="talkback_title">Talkback</string>
     <!-- Summary for the Talkback Accessibility Service. Lets the user know that Talkback is a screenreader and that it is usually most helpful to blind and low vision users and whether the service is on. [CHAR_LIMIT=none] -->

res/xml/development_prefs.xml

@@ -167,6 +167,11 @@
             android:key="camera_hal_hdrplus_switch"
             android:title="@string/camera_hal_hdrplus_switch" />
 
+        <Preference
+            android:key="feature_flags_dashboard"
+            android:title="@string/feature_flags_dashboard_title"
+            android:fragment="com.android.settings.development.featureflags.FeatureFlagsDashboard"/>
+
     </PreferenceCategory>
 
     <PreferenceCategory android:key="debug_networking_category"

src/com/android/settings/development/featureflags/FeatureFlagsDashboard.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2017 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.development.featureflags;
+
+import android.content.Context;
+
+import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settingslib.core.AbstractPreferenceController;
+
+import java.util.List;
+
+public class FeatureFlagsDashboard extends DashboardFragment {
+
+    private static final String TAG = "FeatureFlagsDashboard";
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsProto.MetricsEvent.SETTINGS_FEATURE_FLAGS_DASHBOARD;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.placeholder_prefs;
+    }
+
+    @Override
+    protected int getHelpResource() {
+        return 0;
+    }
+
+    @Override
+    protected List<AbstractPreferenceController> getPreferenceControllers(Context context) {
+        return null;
+    }
+}

tests/robotests/assets/grandfather_not_implementing_index_provider

@@ -4,6 +4,7 @@ com.android.settings.bluetooth.BluetoothPairingDetail
 com.android.settings.accounts.AccountDetailDashboardFragment
 com.android.settings.fuelgauge.PowerUsageAnomalyDetails
 com.android.settings.fuelgauge.AdvancedPowerUsageDetail
+com.android.settings.development.featureflags.FeatureFlagsDashboard
 com.android.settings.deviceinfo.StorageProfileFragment
 com.android.settings.wifi.details.WifiNetworkDetailsFragment
 com.android.settings.wifi.p2p.WifiP2pSettings

tests/robotests/src/com/android/settings/development/featureflags/FeatureFlagsDashboardTest.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2017 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.development.featureflags;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class FeatureFlagsDashboardTest {
+
+    private FeatureFlagsDashboard mDashboard;
+
+    @Before
+    public void setUp() {
+        mDashboard = new FeatureFlagsDashboard();
+    }
+
+    @Test
+    public void shouldNotHaveHelpResource() {
+        assertThat(mDashboard.getHelpResource()).isEqualTo(0);
+    }
+
+    @Test
+    public void shouldLogAsFeatureFlagPage() {
+        assertThat(mDashboard.getMetricsCategory())
+                .isEqualTo(MetricsProto.MetricsEvent.SETTINGS_FEATURE_FLAGS_DASHBOARD);
+    }
+
+    @Test
+    public void shouldUsePlaceholderPreferenceLayout() {
+        assertThat(mDashboard.getPreferenceScreenResId())
+                .isEqualTo(R.xml.placeholder_prefs);
+    }
+}