Adds a command-line flag indicating an open and listening socket to

headless/public/headless_browser.cc

 // Copyright 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 "headless/public/headless_browser.h"
 
 #include <utility>
 
 #include "content/public/common/user_agent.h"
 #include "headless/public/version.h"
 
 using Options = headless::HeadlessBrowser::Options;
 using Builder = headless::HeadlessBrowser::Options::Builder;
 
 namespace headless {
 
 namespace {
 // Product name for building the default user agent string.
 const char kProductName[] = "HeadlessChrome";
 constexpr gfx::Size kDefaultWindowSize(800, 600);
 
 std::string GetProductNameAndVersion() {
   return std::string(kProductName) + "/" + PRODUCT_VERSION;
 }
 }  // namespace
 
 Options::Options(int argc, const char** argv)
     : argc(argc),
       argv(argv),
+      devtools_socket_fd(0),
       message_pump(nullptr),
       single_process_mode(false),
       disable_sandbox(false),
       gl_implementation("osmesa"),
       product_name_and_version(GetProductNameAndVersion()),
       user_agent(content::BuildUserAgentFromProduct(product_name_and_version)),
       window_size(kDefaultWindowSize),
       incognito_mode(true),
       enable_crash_reporter(false) {}
 
 Options::Options(Options&& options) = default;
 
 Options::~Options() {}
 
 Options& Options::operator=(Options&& options) = default;
 
+bool Options::DevtoolsServerEnabled() {
+  return (devtools_endpoint.address().IsValid() || devtools_socket_fd != 0);
+}
+
 Builder::Builder(int argc, const char** argv) : options_(argc, argv) {}
 
 Builder::Builder() : options_(0, nullptr) {}
 
 Builder::~Builder() {}
 
 Builder& Builder::SetProductNameAndVersion(
     const std::string& product_name_and_version) {
   options_.product_name_and_version = product_name_and_version;
   return *this;
 }
 
 Builder& Builder::SetUserAgent(const std::string& user_agent) {
   options_.user_agent = user_agent;
   return *this;
 }
 
 Builder& Builder::EnableDevToolsServer(const net::IPEndPoint& endpoint) {
   options_.devtools_endpoint = endpoint;
   return *this;
 }
 
+Builder& Builder::EnableDevToolsServer(const size_t socket_fd) {
+  options_.devtools_socket_fd = socket_fd;
+  return *this;
+}
+
 Builder& Builder::SetMessagePump(base::MessagePump* message_pump) {
   options_.message_pump = message_pump;
   return *this;
 }
 
 Builder& Builder::SetProxyServer(const net::HostPortPair& proxy_server) {
   options_.proxy_server = proxy_server;
   return *this;
 }
 
@@ skipping 51 matching lines @@
 Builder& Builder::SetCrashDumpsDir(const base::FilePath& dir) {
   options_.crash_dumps_dir = dir;
   return *this;
 }
 
 Options Builder::Build() {
   return std::move(options_);
 }
 
 }  // namespace headless