Move showAutofillSettings to PreferencesLauncher.

chrome/browser/android/preferences/preferences_launcher.h

+// Copyright 2017 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.
+
+#ifndef CHROME_BROWSER_ANDROID_PREFERENCES_PREFERENCES_LAUNCHER_H_
+#define CHROME_BROWSER_ANDROID_PREFERENCES_PREFERENCES_LAUNCHER_H_
+
+#include <jni.h>
+#include "base/macros.h"
+
+namespace chrome {
+namespace android {
+
+class PreferencesLauncher {
+ public:
+  // Opens the autofill settings page.
+  static void ShowAutofillSettings();
+
+ private:
+  PreferencesLauncher() {}
+  ~PreferencesLauncher() {}
+
+  DISALLOW_COPY_AND_ASSIGN(PreferencesLauncher);
+};
+
+}  // namespace android
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_ANDROID_PREFERENCES_PREFERENCES_LAUNCHER_H_