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

tests/robotests/src/com/android/settings/location/AppLocationPermissionPreferenceControllerTest.java

@@ -0,0 +1,69 @@
+package com.android.settings.location;
+
+import android.content.Context;
+import android.os.UserManager;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+import org.robolectric.shadows.ShadowApplication;
+
+import static org.mockito.Answers.RETURNS_DEEP_STUBS;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class AppLocationPermissionPreferenceControllerTest {
+    @Mock
+    private Preference mPreference;
+    @Mock(answer = RETURNS_DEEP_STUBS)
+    private PreferenceScreen mScreen;
+
+    private AppLocationPermissionPreferenceController mController;
+
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        when(mScreen.findPreference(anyString())).thenReturn(mPreference);
+        mController = new AppLocationPermissionPreferenceController(mContext);
+    }
+
+    @Test
+    public void displayPreference_shouldRemovePreference() {
+        Settings.System.putInt(mContext.getContentResolver(),
+                android.provider.Settings.Global.LOCATION_SETTINGS_LINK_TO_PERMISSIONS_ENABLED,
+                0);
+
+        mController.displayPreference(mScreen);
+
+        verify(mScreen).removePreference(any(Preference.class));
+    }
+
+    @Test
+    public void displayPreference_shouldNotRemovePreference() {
+        Settings.System.putInt(mContext.getContentResolver(),
+                android.provider.Settings.Global.LOCATION_SETTINGS_LINK_TO_PERMISSIONS_ENABLED,
+                1);
+        mController.displayPreference(mScreen);
+
+        verify(mScreen, never()).removePreference(any(Preference.class));
+    }
+
+}