Expose cellular signal strength on Android to native

net/android/net_jni_registrar.cc

Index: net/android/net_jni_registrar.cc
diff --git a/net/android/net_jni_registrar.cc b/net/android/net_jni_registrar.cc
index 0a9a6be9ade485e030acd2dd4293e781cdb36b98..450dec8ba97bda64fee1d5d2d949a96349f3a820 100644
--- a/net/android/net_jni_registrar.cc
+++ b/net/android/net_jni_registrar.cc
@@ -6,6 +6,7 @@
 
 #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"
@@ -24,6 +25,7 @@ namespace net {
 namespace android {
 
 static base::android::RegistrationMethod kNetRegisteredMethods[] = {
+    {"AndroidCellularSignalStrength", cellular_signal_strength::Register},
     {"AndroidCertVerifyResult", RegisterCertVerifyResult},
     {"AndroidKeyStore", RegisterKeyStore},
     {"AndroidNetworkLibrary", RegisterNetworkLibrary},