Fix cronet build after JNI registration change.

url/android/url_jni_registrar.h

Index: url/android/url_jni_registrar.h
diff --git a/url/android/url_jni_registrar.h b/url/android/url_jni_registrar.h
deleted file mode 100644
index 8fe7dedd5caca792a45257257cb3268dd4f02684..0000000000000000000000000000000000000000
--- a/url/android/url_jni_registrar.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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.
-
-#ifndef URL_ANDROID_URL_JNI_REGISTRAR_H_
-#define URL_ANDROID_URL_JNI_REGISTRAR_H_
-
-#include <jni.h>
-
-#include "url/url_export.h"
-
-namespace url {
-namespace android {
-
-// Register all JNI bindings necessary for url.
-URL_EXPORT bool RegisterJni(JNIEnv* env);
-
-}  // namespace android
-}  // namespace url
-
-#endif  // URL_ANDROID_URL_JNI_REGISTRAR_H_