Fix cronet build after JNI registration change.

url/android/url_jni_registrar.cc

-// Copyright 2014 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.
-
-#include "url/android/url_jni_registrar.h"
-#include "url/url_features.h"
-
-#if BUILDFLAG(USE_PLATFORM_ICU_ALTERNATIVES)
-#include "url/url_canon_icu_alternatives_android.h"
-#endif
-
-namespace url {
-namespace android {
-
-bool RegisterJni(JNIEnv* env) {
-#if BUILDFLAG(USE_PLATFORM_ICU_ALTERNATIVES)
-  return RegisterIcuAlternativesJni(env);
-#endif
-
-  // Do nothing if USE_PLATFORM_ICU_ALTERNATIVES is false.
-  return true;
-}
-
-}  // namespace android
-}  // namespace url