Add Input & Gesture/Language & Region pages under System.

- Removed LanguageAndInputDashboardAlias because now the contents are
  moved to new pages.

Bug: 32637613
Bug: 32643833
Test: RunSettingsRoboTests
Change-Id: Ia66a942a449a07b9cbba53bdc97738148aafadb4

src/com/android/settings/inputmethod/InputAndGestureSettings.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2016 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.inputmethod;
+
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.core.PreferenceController;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settingslib.drawer.CategoryKey;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class InputAndGestureSettings extends DashboardFragment {
+
+    private static final String TAG = "InputAndGestureSettings";
+
+    @Override
+    public int getMetricsCategory() {
+        return INPUT_AND_GESTURE_CATEGORY_FRAGMENT;
+    }
+
+    @Override
+    protected String getCategoryKey() {
+        return CategoryKey.CATEGORY_SYSTEM_INPUT;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.input_and_gesture;
+    }
+
+    @Override
+    protected List<PreferenceController> getPreferenceControllers(Context context) {
+        final GameControllerPreferenceController gameControllerPreferenceController
+                = new GameControllerPreferenceController(context);
+        getLifecycle().addObserver(gameControllerPreferenceController);
+
+        final List<PreferenceController> controllers = new ArrayList<>();
+        controllers.add(gameControllerPreferenceController);
+
+        return controllers;
+    }
+}