Remove unnecessary onDeveloperOptionsSwitchEnabled/Disabled override.

- default implementation has been added in the super class to handle
enabling/disabling the preference when the master developer options
switch it turned on/off. Removing all subclass that originally
implemented the methods that only contains the default behavior.

Bug: 73955632
Test: make RunSettingsRoboTests
Change-Id: I13c372c2ab498a5786b40cdc1ad3b5f3424abb5a

src/com/android/settings/development/WebViewAppPreferenceController.java

@@ -20,7 +20,6 @@ import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
-import android.support.v7.preference.PreferenceScreen;
 import android.text.TextUtils;
 import android.util.Log;
 
@@ -31,8 +30,8 @@ import com.android.settingslib.applications.DefaultAppInfo;
 import com.android.settingslib.development.DeveloperOptionsPreferenceController;
 import com.android.settingslib.wrapper.PackageManagerWrapper;
 
-public class WebViewAppPreferenceController extends
-        DeveloperOptionsPreferenceController implements PreferenceControllerMixin {
+public class WebViewAppPreferenceController extends DeveloperOptionsPreferenceController implements
+        PreferenceControllerMixin {
 
     private static final String TAG = "WebViewAppPrefCtrl";
     private static final String WEBVIEW_APP_KEY = "select_webview_provider";
@@ -40,8 +39,6 @@ public class WebViewAppPreferenceController extends
     private final PackageManagerWrapper mPackageManager;
     private final WebViewUpdateServiceWrapper mWebViewUpdateServiceWrapper;
 
-    private Preference mPreference;
-
     public WebViewAppPreferenceController(Context context) {
         super(context);
 
@@ -54,13 +51,6 @@ public class WebViewAppPreferenceController extends
         return WEBVIEW_APP_KEY;
     }
 
-    @Override
-    public void displayPreference(PreferenceScreen screen) {
-        super.displayPreference(screen);
-
-        mPreference = screen.findPreference(getPreferenceKey());
-    }
-
     @Override
     public void updateState(Preference preference) {
         final CharSequence defaultAppLabel = getDefaultAppLabel();
@@ -72,16 +62,6 @@ public class WebViewAppPreferenceController extends
         }
     }
 
-    @Override
-    protected void onDeveloperOptionsSwitchEnabled() {
-        mPreference.setEnabled(true);
-    }
-
-    @Override
-    protected void onDeveloperOptionsSwitchDisabled() {
-        mPreference.setEnabled(false);
-    }
-
     @VisibleForTesting
     DefaultAppInfo getDefaultAppInfo() {
         final PackageInfo currentPackage = mWebViewUpdateServiceWrapper.getCurrentWebViewPackage();