Added --enable-ui-devtools to chrome://flags.

components/ui_devtools/devtools_server.cc

 // Copyright 2016 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 "components/ui_devtools/devtools_server.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/format_macros.h"
@@ skipping 16 matching lines @@
 namespace {
 const char kChromeDeveloperToolsPrefix[] =
     "chrome-devtools://devtools/bundled/inspector.html?ws=";
 
 bool IsUiDevToolsEnabled() {
   return base::CommandLine::ForCurrentProcess()->HasSwitch(kEnableUiDevTools);
 }
 
 int GetUiDevToolsPort() {
   DCHECK(IsUiDevToolsEnabled());
+  // This value is duplicated in the chrome://flags description.
   constexpr int kDefaultPort = 9223;
   int port;
   if (!base::StringToInt(
           base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
               kEnableUiDevTools),
           &port))
     port = kDefaultPort;
   return port;
 }
 
@@ skipping 129 matching lines @@
   UiDevToolsClient* client = it->second;
   DCHECK(client);
   main_thread_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&UiDevToolsClient::Disconnect, base::Unretained(client)));
   connections_.erase(it);
 }
 
 }  // namespace devtools
 }  // namespace ui