Add first part of the network_tester functionality.

webrtc/tools/network_tester/network_tester_config.proto

Index: webrtc/tools/network_tester/network_tester_config.proto
diff --git a/webrtc/tools/network_tester/network_tester_config.proto b/webrtc/tools/network_tester/network_tester_config.proto
new file mode 100644
index 0000000000000000000000000000000000000000..817fa7a54cb3cf0a543dbf3fe498e907e69f0036
--- /dev/null
+++ b/webrtc/tools/network_tester/network_tester_config.proto
@@ -0,0 +1,9 @@
+syntax = "proto2";
+option optimize_for = LITE_RUNTIME;
+package webrtc.network_tester.config;
+
+message NetworkTesterConfig {
+  optional int32 packet_send_interval_ms = 1;
+  optional float packet_size = 2;
+  optional int32 execution_time_ms = 3;
+}

[minyue-webrtc, 2017/04/03 08:05:19]

Maybe you want to add

message NetworkTesterAllConfigs {
  repeated NetworkTesterConfig;
}

[minyue-webrtc, 2017/04/04 09:08:01]

Any reply?

[michaelt, 2017/04/04 09:18:45]

Oops i missed that one.
At the moment I do the serializations by hand (same way as in debug dump). For
this case "repeated" would probably work as well, since i don't expect to have
such a huge config that it will not fit in to the memory. Would you prefer, to
realize this with "repeated" ?

[minyue-webrtc, 2017/04/04 09:24:34]

That's way I suggested an overall config. That may make your parser a lot
easier.

[michaelt, 2017/04/04 09:29:37]

I still would need get the configs one by one.  But you are right we could
simplify the config_reader