linux: call g_thread_init() at relevant startup points

chrome/plugin/plugin_thread.cc

Index: chrome/plugin/plugin_thread.cc
diff --git a/chrome/plugin/plugin_thread.cc b/chrome/plugin/plugin_thread.cc
index ae90e1a6b8fdc1395a515768c587e79bc8102073..307cbaaee6d2d6ff0d5b38153f7d63635d9d02fe 100644
--- a/chrome/plugin/plugin_thread.cc
+++ b/chrome/plugin/plugin_thread.cc
@@ -35,6 +35,7 @@ PluginThread::PluginThread()
   {
     // XEmbed plugins assume they are hosted in a Gtk application, so we need
     // to initialize Gtk in the plugin process.
+    g_thread_init(NULL);
     const std::vector<std::string>& args =
         CommandLine::ForCurrentProcess()->argv();
     int argc = args.size();