DevTools: remote debugging should work in the IPv6-only environment.

chrome/browser/chrome_browser_main.cc

 // Copyright (c) 2012 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/browser/chrome_browser_main.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <set>
 #include <string>
@@ skipping 528 matching lines @@
 }
 #endif  // !defined(OS_ANDROID)
 
 void LaunchDevToolsHandlerIfNeeded(const base::CommandLine& command_line) {
   if (command_line.HasSwitch(::switches::kRemoteDebuggingPort)) {
     std::string port_str =
         command_line.GetSwitchValueASCII(::switches::kRemoteDebuggingPort);
     int port;
     if (base::StringToInt(port_str, &port) && port >= 0 && port < 65535) {
       g_browser_process->CreateDevToolsHttpProtocolHandler(
-          "127.0.0.1", static_cast<uint16_t>(port));
+          "", static_cast<uint16_t>(port));
     } else {
       DLOG(WARNING) << "Invalid http debugger port number " << port;
     }
   }
 }
 
 class ScopedMainMessageLoopRunEvent {
  public:
   ScopedMainMessageLoopRunEvent() {
     TRACE_EVENT_ASYNC_BEGIN0(
@@ skipping 1388 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }