tp: Nit reorder of class attributes (#3237)

Reorder per comment in https://github.com/google/perfetto/pull/3215

src/trace_processor/importers/proto/android_probes_parser.cc

diff --git a/src/trace_processor/importers/proto/android_probes_parser.cc b/src/trace_processor/importers/proto/android_probes_parser.cc
index c908769..4d5ece8 100644
--- a/src/trace_processor/importers/proto/android_probes_parser.cc
+++ b/src/trace_processor/importers/proto/android_probes_parser.cc
@@ -132,6 +132,7 @@
                                          AndroidProbesTracker* tracker)
     : context_(context),
       tracker_(tracker),
+      power_rails_args_tracker_(std::make_unique<ArgsTracker>(context)),
       battery_status_id_(context->storage->InternString("BatteryStatus")),
       plug_type_id_(context->storage->InternString("PlugType")),
       energy_consumer_id_(
@@ -150,7 +151,6 @@
       power_rail_raw_name_id_(context->storage->InternString("raw_name")),
       power_rail_subsys_name_arg_id_(
           context->storage->InternString("subsystem_name")),
-      power_rails_args_tracker_(std::make_unique<ArgsTracker>(context)),
       rail_packet_timestamp_id_(context->storage->InternString("packet_ts")) {}
 
 void AndroidProbesParser::ParseRailDescriptor(

src/trace_processor/importers/proto/android_probes_parser.h

diff --git a/src/trace_processor/importers/proto/android_probes_parser.h b/src/trace_processor/importers/proto/android_probes_parser.h
index 5ba17ce..94aad5d 100644
--- a/src/trace_processor/importers/proto/android_probes_parser.h
+++ b/src/trace_processor/importers/proto/android_probes_parser.h
@@ -57,6 +57,8 @@
   TraceProcessorContext* const context_;
   AndroidProbesTracker* const tracker_;
 
+  std::unique_ptr<ArgsTracker> power_rails_args_tracker_;
+
   const StringId battery_status_id_;
   const StringId plug_type_id_;
   const StringId energy_consumer_id_;
@@ -72,7 +74,6 @@
   const StringId bt_handle_id_;
   const StringId power_rail_raw_name_id_;
   const StringId power_rail_subsys_name_arg_id_;
-  std::unique_ptr<ArgsTracker> power_rails_args_tracker_;
   const StringId rail_packet_timestamp_id_;
 };
 }  // namespace perfetto::trace_processor