Utility process: initialize GTK when the sandbox is disabled.

content/utility/utility_main.cc

 // Copyright (c) 2011 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 "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/threading/platform_thread.h"
 #include "base/timer/hi_res_timer_manager.h"
 #include "content/child/child_process.h"
 #include "content/common/sandbox_linux.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/common/sandbox_init.h"
 #include "content/utility/utility_thread_impl.h"
 
 #if defined(OS_WIN)
 #include "sandbox/win/src/sandbox.h"
 #endif
 
+#if defined(TOOLKIT_GTK)
+#include <gtk/gtk.h>
+
+#include "ui/gfx/gtk_util.h"
+#endif
+
 namespace content {
 
 // Mainline routine for running as the utility process.
 int UtilityMain(const MainFunctionParams& parameters) {
   // The main message loop of the utility process.
   base::MessageLoop main_message_loop;
   base::PlatformThread::SetName("CrUtilityMain");
 
 #if defined(OS_LINUX)
-  // Initialize the sandbox before any thread is created.
+  // Initializes the sandbox before any threads are created.
+  // TODO(jorgelo): move this after GTK initialization when we enable a strict
+  // Seccomp-BPF policy.
   LinuxSandbox::InitializeSandbox();
 #endif
 
+#if defined(OS_POSIX)
+  // The utility process is used to load plugins (see OnLoadPlugins() in
+  // utility_thread_impl.cc). Some plugins expect the browser to have loaded
+  // GLib/GTK.
+  // Due to bugs in GLib we need to initialize GLib/GTK before we start threads,
+  // see crbug.com/309093.
+
+#if defined(TOOLKIT_GTK)
+  bool is_sandboxed = false;
+
+#if defined(OS_LINUX)
+  // On Linux, we only initialize GLib/GTK if we're not sandboxed.
+  is_sandboxed = !parameters.command_line.HasSwitch(switches::kNoSandbox);
+#endif
+
+  if (!is_sandboxed) {
+    // g_thread_init() is deprecated since glib 2.31.0, please see release note:
+    // http://mail.gnome.org/archives/gnome-announce-list/2011-October/msg00041.html
+#if !(GLIB_CHECK_VERSION(2, 31, 0))
+    if (!g_thread_get_initialized()) {
+      g_thread_init(NULL);
+    }
+#endif
+    gfx::GtkInitFromCommandLine(*CommandLine::ForCurrentProcess());
+  }
+#endif
+#endif
+
   ChildProcess utility_process;
   utility_process.set_main_thread(new UtilityThreadImpl());
 
   base::HighResolutionTimerManager hi_res_timer_manager;
 
 #if defined(OS_WIN)
   bool no_sandbox = parameters.command_line.HasSwitch(switches::kNoSandbox);
   if (!no_sandbox) {
     sandbox::TargetServices* target_services =
         parameters.sandbox_info->target_services;
     if (!target_services)
       return false;
     target_services->LowerToken();
   }
 #endif
 
   base::MessageLoop::current()->Run();
 
   return 0;
 }
 
 }  // namespace content