"Chromium Autofill Settings" option should open autofill settings page.

chrome/android/java/src/org/chromium/chrome/browser/ChromiumApplication.java

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser;
 
+import android.os.Build;
+
 import org.chromium.base.CalledByNative;
 import org.chromium.chrome.browser.preferences.LocationSettings;
+import org.chromium.chrome.browser.preferences.PreferencesLauncher;
+import org.chromium.chrome.browser.preferences.ProtectedContentPreferences;
+import org.chromium.chrome.browser.preferences.autofill.AutofillPreferences;
+import org.chromium.chrome.browser.preferences.password.ManageSavedPasswordsPreferences;
 import org.chromium.content.app.ContentApplication;
 
 /**
  * Basic application functionality that should be shared among all browser applications that use
  * chrome layer.
  */
 public abstract class ChromiumApplication extends ContentApplication {
 
     /**
      * Returns the class name of the Settings activity.
      */
     public abstract String getSettingsActivityName();
 
     /**
      * Opens a protected content settings page, if available.
      */
     @CalledByNative
-    protected void openProtectedContentSettings() {}
+    protected void openProtectedContentSettings() {
+        assert Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
+        PreferencesLauncher.launchSettingsPage(this,
+                ProtectedContentPreferences.class.getName());
+    }
 
     @CalledByNative
-    protected void showAutofillSettings() {}
+    protected void showAutofillSettings() {
+        PreferencesLauncher.launchSettingsPage(this,
+                AutofillPreferences.class.getName());
+    }
 
     @CalledByNative
-    protected void showPasswordSettings() {}
+    protected void showPasswordSettings() {
+        PreferencesLauncher.launchSettingsPage(this,
+                ManageSavedPasswordsPreferences.class.getName());
+    }
 
     /**
      * Returns an instance of LocationSettings to be installed as a singleton.
      */
     public LocationSettings createLocationSettings() {
         return new LocationSettings(this);
     }
 
     /**
      * Opens the UI to clear browsing data.
@@ skipping 15 matching lines @@
 
     /**
      * @return The user agent string of Chrome.
      */
     public static String getBrowserUserAgent() {
         return nativeGetBrowserUserAgent();
     }
 
     private static native String nativeGetBrowserUserAgent();
 }