Expose cellular signal strength on Android to native

net/android/net_jni_registrar.cc

 // Copyright (c) 2012 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 "net/android/net_jni_registrar.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_registrar.h"
+#include "net/android/cellular_signal_strength.h"
 #include "net/android/gurl_utils.h"
 #include "net/android/http_auth_negotiate_android.h"
 #include "net/android/keystore.h"
 #include "net/android/network_change_notifier_android.h"
 #include "net/android/network_library.h"
 #include "net/android/traffic_stats.h"
 #include "net/cert/x509_util_android.h"
 #include "net/proxy/proxy_config_service_android.h"
 #include "url/url_features.h"
 
 #if BUILDFLAG(USE_PLATFORM_ICU_ALTERNATIVES)
 #include "net/base/net_string_util_icu_alternatives_android.h"  // nogncheck
 #endif
 
 namespace net {
 namespace android {
 
 static base::android::RegistrationMethod kNetRegisteredMethods[] = {
+    {"AndroidCellularSignalStrength", cellular_signal_strength::Register},
     {"AndroidCertVerifyResult", RegisterCertVerifyResult},
     {"AndroidKeyStore", RegisterKeyStore},
     {"AndroidNetworkLibrary", RegisterNetworkLibrary},
     {"AndroidTrafficStats", traffic_stats::Register},
     {"GURLUtils", RegisterGURLUtils},
     {"HttpAuthNegotiateAndroid", HttpAuthNegotiateAndroid::Register},
     {"NetworkChangeNotifierAndroid", NetworkChangeNotifierAndroid::Register},
     {"ProxyConfigService", ProxyConfigServiceAndroid::Register},
     {"X509Util", RegisterX509Util},
 #if BUILDFLAG(USE_PLATFORM_ICU_ALTERNATIVES)
     {"NetStringUtils", RegisterNetStringUtils}
 #endif
 };
 
 bool RegisterJni(JNIEnv* env) {
   return base::android::RegisterNativeMethods(
       env, kNetRegisteredMethods, arraysize(kNetRegisteredMethods));
 }
 
 }  // namespace android
 }  // namespace net