Use Android callback API to obtain cellular signal strength

net/nqe/network_quality_estimator_params.cc

 // Copyright 2016 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/nqe/network_quality_estimator_params.h"
 
 #include <stdint.h>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/time/time.h"
@@ skipping 79 matching lines @@
   auto it = variation_params.find("HalfLifeSeconds");
   if (it != variation_params.end() &&
       base::StringToInt(it->second, &variations_value) &&
       variations_value >= 1) {
     half_life_seconds = variations_value;
   }
   DCHECK_GT(half_life_seconds, 0);
   return pow(0.5, 1.0 / half_life_seconds);
 }
 
-double GetWeightMultiplierPerDbm(
+double GetWeightMultiplierPerSignalStrengthLevel(
     const std::map<std::string, std::string>& variation_params) {
   // The default weight is set to 1.0, so by default, RSSI has no effect on the
   // observation's weight.
   return GetDoubleValueForVariationParamWithDefaultValue(
-      variation_params, "rssi_weight_per_dbm", 1.0);
+      variation_params, "rssi_weight_per_signal_strength_level", 1.0);
 }
 
 const char* GetNameForConnectionType(
     net::NetworkChangeNotifier::ConnectionType connection_type) {
   switch (connection_type) {
     case net::NetworkChangeNotifier::CONNECTION_UNKNOWN:
       return "Unknown";
     case net::NetworkChangeNotifier::CONNECTION_ETHERNET:
       return "Ethernet";
     case net::NetworkChangeNotifier::CONNECTION_WIFI:
@@ skipping 268 matching lines @@
   // Use 1000 milliseconds as the default value.
   return base::TimeDelta::FromMilliseconds(GetValueForVariationParam(
       variation_params, "min_socket_watcher_notification_interval_msec", 1000));
 }
 
 }  // namespace internal
 
 }  // namespace nqe
 
 }  // namespace net