Move webrtc/{tools => rtc_tools}

Leaving compatibility script in webrtc/tools/compare_videos.py to
avoid breaking our video quality tests in Chromium.
Forwarding GN targets are left in webrtc/tools/BUILD.gn.

BUG=webrtc:7855
NOTRY=True
NOPRESUBMIT=True

Review-Url: https://codereview.webrtc.org/2965593002
Cr-Commit-Position: refs/heads/master@{#18848}

webrtc/rtc_tools/rtcbot/bot/api.js

@@ -0,0 +1,37 @@
+// Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the LICENSE file in the root of the source
+// tree. An additional intellectual property rights grant can be found
+// in the file PATENTS.  All contributing project authors may
+// be found in the AUTHORS file in the root of the source tree.
+//
+// This file exposes the api for the bot to connect to the host script
+// waiting a websocket connection and using dnode for javascript rpc.
+//
+// This file is served to the browser via browserify to resolve the
+// dnode requires.
+var WebSocketStream = require('websocket-stream');
+var Dnode = require('dnode');
+
+function connectToServer(api) {
+  var stream = new WebSocketStream("wss://localhost:8080/");
+  var dnode = new Dnode(api);
+  dnode.on('error', function (error) { console.log(error); });
+  dnode.pipe(stream).pipe(dnode);
+}
+
+// Dnode loses certain method calls when exposing native browser objects such as
+// peer connections. This methods helps work around that by allowing one to
+// redefine a non-native method in a target "obj" from "src" that applies a list
+// of casts to the arguments (types are lost in dnode).
+function expose(obj, src, method, casts) {
+  obj[method] = function () {
+    for (index in casts)
+      arguments[index] = new (casts[index])(arguments[index]);
+    src[method].apply(src, arguments);
+  }
+}
+
+window.expose = expose;
+window.connectToServer = connectToServer;