Move remaining @CalledByNative methods out of ChromeApplication.

chrome/browser/android/partner_browser_customizations.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_PARTNER_BROWSER_CUSTOMIZATIONS_H_
+#define CHROME_BROWSER_ANDROID_PARTNER_BROWSER_CUSTOMIZATIONS_H_
+
+#include "base/macros.h"
+
+namespace chrome {
+namespace android {
+
+class PartnerBrowserCustomizations {
+ public:
+  // Whether incognito mode is disabled by the partner.
+  static bool IsIncognitoDisabled();
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(PartnerBrowserCustomizations);
+};
+
+}  // namespace android
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_ANDROID_PARTNER_BROWSER_CUSTOMIZATIONS_H_