Utility process: initialize GTK when the sandbox is disabled.

content/utility/utility_main.cc

Index: content/utility/utility_main.cc
diff --git a/content/utility/utility_main.cc b/content/utility/utility_main.cc
index c93c1eca5366ae0c3c53f75af3de4a88593262fc..29fd01b2938c8670f721f01e6899963f25a3dcd5 100644
--- a/content/utility/utility_main.cc
+++ b/content/utility/utility_main.cc
@@ -17,6 +17,12 @@
 #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.
@@ -26,10 +32,40 @@ int UtilityMain(const MainFunctionParams& parameters) {
   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());