x11: Move X event handling out of the message-pump.

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 dba4955b3f235376f7e713c9382c4a18f84e392d..1688371b3793441ead5825a7a017c35aa2ff6108 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 +15,7 @@
 #include "grit/generated_resources.h"
 #include "ui/aura/env.h"
 #include "ui/base/l10n/l10n_util.h"
+#include "ui/events/platform/platform_event_source.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/widget/native_widget_aura.h"
 
@@ -68,6 +69,8 @@ void ChromeBrowserMainExtraPartsAura::PreEarlyInitialization() {
 }
 
 void ChromeBrowserMainExtraPartsAura::ToolkitInitialized() {
+  event_source_ = ui::PlatformEventSource::CreateDefault();
+
 #if !defined(OS_CHROMEOS)
 #if defined(USE_ASH)
   aura::Env::CreateInstance();