log visibility of views

Depends-On: I5b1dccb5d103ece3112acf38889bae16273b092f
Change-Id: I116aed2bb805f723a5bf2ec9eb94257de0b4a7b5

src/com/android/settings/DisplaySettings.java

@@ -16,6 +16,7 @@
 
 package com.android.settings;
 
+import com.android.internal.logging.MetricsLogger;
 import com.android.internal.view.RotationPolicy;
 import com.android.settings.DropDownPreference.Callback;
 import com.android.settings.search.BaseSearchIndexProvider;
@@ -85,6 +86,11 @@ public class DisplaySettings extends SettingsPreferenceFragment implements
     private SwitchPreference mDozePreference;
     private SwitchPreference mAutoBrightnessPreference;
 
+    @Override
+    protected int getMetricsCategory() {
+        return MetricsLogger.DISPLAY;
+    }
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);