[Linux] Call g_thread_init() in UtilityThreadImpl::OnLoadPlugins().

content/utility/utility_thread_impl.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 "content/utility/utility_thread_impl.h"
 
 #include <stddef.h>
 
+#include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/memory/scoped_vector.h"
 #include "content/common/child_process.h"
 #include "content/common/child_process_messages.h"
 #include "content/common/indexed_db_key.h"
 #include "content/common/utility_messages.h"
 #include "content/common/webkitplatformsupport_impl.h"
 #include "content/public/utility/content_utility_client.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKey.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSerializedScriptValue.h"
 #include "webkit/glue/idb_bindings.h"
 #include "webkit/plugins/npapi/plugin_list.h"
 
+#if defined(TOOLKIT_USES_GTK)
+#include <gtk/gtk.h>
+
+#include "ui/gfx/gtk_util.h"
+#endif
+
 namespace {
 
 template<typename SRC, typename DEST>
 void ConvertVector(const SRC& src, DEST* dest) {
   dest->reserve(src.size());
   for (typename SRC::const_iterator i = src.begin(); i != src.end(); ++i)
     dest->push_back(typename DEST::value_type(*i));
 }
 
 }  // namespace
 
 UtilityThreadImpl::UtilityThreadImpl()
     : batch_mode_(false) {
   ChildProcess::current()->AddRefProcess();
   webkit_platform_support_.reset(new content::WebKitPlatformSupportImpl);
   WebKit::initialize(webkit_platform_support_.get());
   content::GetContentClient()->utility()->UtilityThreadStarted();
+
+  // On Linux, some plugins expect the browser to have loaded glib/gtk. Do that
+  // before attempting to call into the plugin.
+#if defined(TOOLKIT_USES_GTK)
+  g_thread_init(NULL);
+  gfx::GtkInitFromCommandLine(*CommandLine::ForCurrentProcess());
+#endif
 }
 
 UtilityThreadImpl::~UtilityThreadImpl() {
   WebKit::shutdown();
 }
 
 bool UtilityThreadImpl::Send(IPC::Message* msg) {
   return ChildThread::Send(msg);
 }
 
@@ skipping 89 matching lines @@
     const webkit::npapi::PluginGroup* group = plugin_groups[0];
     DCHECK_EQ(group->web_plugin_infos().size(), 1u);
 
     Send(new UtilityHostMsg_LoadedPlugin(i, group->web_plugin_infos().front()));
   }
 
   ReleaseProcessIfNeeded();
 }
 #endif