Initialize RenderSandboxHostLinux in --no-zygote mode to not crash.

content/browser/browser_main_loop.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 "content/browser/browser_main_loop.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 199 matching lines @@
 #ifdef DestroyAll
 #undef DestroyAll
 #endif
 
 namespace content {
 namespace {
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 void SetupSandbox(const base::CommandLine& parsed_command_line) {
   TRACE_EVENT0("startup", "SetupSandbox");
+  // RenderSandboxHostLinux needs to be initialized even if the sandbox and
+  // zygote are both disabled. It initializes the renderer socket.
+  RenderSandboxHostLinux::GetInstance()->Init();
+
   if (parsed_command_line.HasSwitch(switches::kNoZygote)) {
     CHECK(parsed_command_line.HasSwitch(switches::kNoSandbox))
         << "--no-sandbox should be used together with --no--zygote";
     return;
   }
 
-  // Tickle the sandbox host and zygote host so they fork now.
-  RenderSandboxHostLinux::GetInstance()->Init();
+  // Tickle the zygote host so it forks now.
   ZygoteHostImpl::GetInstance()->Init(parsed_command_line);
   *GetGenericZygote() = CreateZygote();
   RenderProcessHostImpl::EarlyZygoteLaunch();
 }
 #endif
 
 #if defined(USE_GLIB)
 static void GLibLogHandler(const gchar* log_domain,
                            GLogLevelFlags log_level,
                            const gchar* message,
@@ skipping 1511 matching lines @@
         BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE),
         MediaInternals::GetInstance());
   }
   CHECK(audio_manager_);
 
   audio_system_ = media::AudioSystemImpl::Create(audio_manager_.get());
   CHECK(audio_system_);
 }
 
 }  // namespace content