Location Setting change for O

This is a change that adds a link from location settings to location
permissions

Test: Manual

Bug: 34400189
Change-Id: If873fbb6e53c1fd86a3cfe38e06465cdec56bef8

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

@@ -0,0 +1,39 @@
+package com.android.settings.location;
+
+import android.content.Context;
+import android.content.Intent;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.core.PreferenceController;
+
+public class AppLocationPermissionPreferenceController extends PreferenceController {
+
+    private static final String KEY_APP_LEVEL_PERMISSIONS = "app_level_permissions";
+    private Preference mPreference;
+
+    public AppLocationPermissionPreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        if (isAvailable()) {
+            mPreference = screen.findPreference(KEY_APP_LEVEL_PERMISSIONS);
+        }
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_APP_LEVEL_PERMISSIONS;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return Settings.Global.getInt(mContext.getContentResolver(),
+                android.provider.Settings.Global.LOCATION_SETTINGS_LINK_TO_PERMISSIONS_ENABLED, 1)
+                == 1;
+    }
+}