[chromedriver] Add Network Conditions Override Manager and tests

chrome/test/chromedriver/chrome/recorder_devtools_client.cc

+// Copyright (c) 2015 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 "chrome/test/chromedriver/chrome/recorder_devtools_client.h"
+#include "chrome/test/chromedriver/chrome/status.h"
+
+RecorderDevToolsClient::RecorderDevToolsClient() {}
+
+RecorderDevToolsClient::~RecorderDevToolsClient() {}
+
+Status RecorderDevToolsClient::SendCommandAndGetResult(
+    const std::string& method,
+    const base::DictionaryValue& params,
+    scoped_ptr<base::DictionaryValue>* result) {
+  commands_.push_back(Command(method, params));
+
+  // For any tests that directly call SendCommandAndGetResults, we'll just
+  // always return { "result": true }. Currently only used when testing
+  // "canEmulateNetworkConditions".
+  (*result).reset(new base::DictionaryValue);
+  (*result)->SetBoolean("result", true);
+  return Status(kOk);
+}