Fix cronet build after JNI registration change.

url/url_canon_icu_alternatives_android.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 <string.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
@@ skipping 16 matching lines @@
   // NULL indicates failure.
   if (java_result.is_null())
     return false;
 
   base::string16 utf16_result =
       base::android::ConvertJavaStringToUTF16(java_result);
   output->Append(utf16_result.data(), static_cast<int>(utf16_result.size()));
   return true;
 }
 
-bool RegisterIcuAlternativesJni(JNIEnv* env) {
-  return android::RegisterNativesImpl(env);
-}
-
 }  // namespace url