Add webdriver endpoint to send custom debugger commands

chrome/test/chromedriver/devtools_events_logger.cc

Index: chrome/test/chromedriver/devtools_events_logger.cc
diff --git a/chrome/test/chromedriver/devtools_events_logger.cc b/chrome/test/chromedriver/devtools_events_logger.cc
new file mode 100644
index 0000000000000000000000000000000000000000..668bd7a5fdbc49b1c9fb3e19361821199f08b9cb
--- /dev/null
+++ b/chrome/test/chromedriver/devtools_events_logger.cc
@@ -0,0 +1,43 @@
+// Copyright 2017 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/devtools_events_logger.h"
+
+#include "base/json/json_writer.h"
+#include "chrome/test/chromedriver/chrome/devtools_client.h"
+#include "chrome/test/chromedriver/chrome/devtools_client_impl.h"
+
+DevToolsEventsLogger::DevToolsEventsLogger(Log* log,
+                                           const base::ListValue* prefs)
+    : log_(log),
+      prefs_(prefs) {}
+
+inline DevToolsEventsLogger::~DevToolsEventsLogger() {}
+
+Status DevToolsEventsLogger::OnConnected(DevToolsClient* client) {
+  for (base::ListValue::const_iterator it = prefs_->begin();
+       it != prefs_->end();
+       ++it) {
+    std::string event;
+    it->GetAsString(&event);
+    events_.insert(event);
+  }
+  return Status(kOk);
+}
+
+Status DevToolsEventsLogger::OnEvent(DevToolsClient* client,
+                                     const std::string& method,
+                                     const base::DictionaryValue& params) {
+  std::unordered_set<std::string>::iterator it = events_.find(method);
+  if (it != events_.end()) {
+    base::DictionaryValue log_message_dict;
+    log_message_dict.SetString("method", method);
+    log_message_dict.Set("params", params.DeepCopy());
+    std::string log_message_json;
+    base::JSONWriter::Write(log_message_dict, &log_message_json);
+
+    log_->AddEntry(Log::kInfo, log_message_json);
+  }
+  return Status(kOk);
+}