Convert location settings to DashboardFragment.

- change LocationMode, LocationSettings, and ScanningSettings to be
DashboardFragment.
- remove LocationSettingsBase and moved base logics into base
controller.
- add controllers for the preferences under the 3 location settings
pages.

Fixes: 68719207
Test: make RunSettingsRoboTests
Change-Id: Icedf691c2a9f7989faebee39ea9da672209b7957

src/com/android/settings/location/LocationModeHighAccuracyPreferenceController.java

@@ -0,0 +1,40 @@
+/*
+ * 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.location;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+public class LocationModeHighAccuracyPreferenceController
+        extends LocationModeRadioButtonPreferenceController {
+
+    private static final String KEY_HIGH_ACCURACY = "high_accuracy";
+
+    public LocationModeHighAccuracyPreferenceController(Context context,
+            Lifecycle lifecycle) {
+        super(context, lifecycle);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_HIGH_ACCURACY;
+    }
+
+    @Override
+    protected int getLocationMode() {
+        return Settings.Secure.LOCATION_MODE_HIGH_ACCURACY;
+    }
+}