Aura/GTK integration: Create a small stub library that can talk to GTK.

chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.cc

Index: chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.cc
diff --git a/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.cc b/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.cc
index c7004cdefb53b5c01dc23d834db9839af4068d71..b66355dd64257c47ffd036b1cfb3647dbb413f62 100644
--- a/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.cc
+++ b/chrome/browser/ui/aura/chrome_browser_main_extra_parts_aura.cc
@@ -15,6 +15,10 @@
 #include "ui/aura/single_monitor_manager.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/widget/native_widget_aura.h"
+#if defined(OS_LINUX)

[sky, 2012/06/06 21:04:07]

Can you move this into its own block after the ash one, eg:

#if !defined(USE_ASH) && defined(OS_LINUX)

+#include "ui/base/linux_ui.h"
+#include "chrome/browser/ui/libgtk2ui/gtk2_ui.h"
+#endif
 #endif  // !USE_ASH
 
 ChromeBrowserMainExtraPartsAura::ChromeBrowserMainExtraPartsAura() {
@@ -25,6 +29,11 @@ void ChromeBrowserMainExtraPartsAura::PreProfileInit() {
   gfx::Screen::SetInstance(aura::CreateDesktopScreen());
   aura::Env::GetInstance()->SetMonitorManager(new aura::SingleMonitorManager);
   stacking_client_.reset(new aura::DesktopStackingClient);
+
+#if defined(OS_LINUX)
+  // TODO(erg): Refactor this into a dlopen call when we add a GTK3 port.
+  ui::LinuxUI::SetInstance(BuildGtk2UI());
+#endif
 #endif  // !USE_ASH
 }