Remove Language and Input duplicates

Change the keys in the Language and Input screen for the
gesture and tts-output settings so they can be disabled
in search. Then change the preference controllers to take
a key as input to avoid crashes on the other screens with
these settings.

Merge for: ag/2098173/

Test: make RunSettingsRoboTests
Bug: 33701673
Change-Id: I8bc0776131fcac5a6edf7e8271bc53252c2fc719

tests/robotests/src/com/android/settings/DisplaySettingsTest.java

@@ -0,0 +1,44 @@
+package com.android.settings;
+
+import android.content.Context;
+import android.os.PowerManager;
+import com.android.settings.core.PreferenceController;
+import com.android.settings.testutils.XmlTestUtils;
+import com.android.settings.testutils.shadow.ShadowPowerManagerWrapper;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class DisplaySettingsTest {
+
+    @Test
+    @Config(shadows = ShadowPowerManagerWrapper.class)
+    public void testPreferenceControllers_getPreferenceKeys_existInPreferenceScreen() {
+        final Context context = RuntimeEnvironment.application;
+//        PowerManager wrapper = mock(PowerManager.class);
+//        doReturn(wrapper).when(context).getSystemService(Context.POWER_SERVICE);
+        final DisplaySettings fragment = new DisplaySettings();
+        final List<String> preferenceScreenKeys = XmlTestUtils.getKeysFromPreferenceXml(context,
+                fragment.getPreferenceScreenResId());
+        final List<String> preferenceKeys = new ArrayList<>();
+
+        for (PreferenceController controller : fragment.getPreferenceControllers(context)) {
+            preferenceKeys.add(controller.getPreferenceKey());
+        }
+        // Nightmode is currently hidden
+        preferenceKeys.remove("night_mode");
+
+        assertThat(preferenceScreenKeys).containsAllIn(preferenceKeys);
+    }
+}