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

ui/base/dragdrop/os_exchange_data_unittest.cc

Index: ui/base/dragdrop/os_exchange_data_unittest.cc
diff --git a/ui/base/dragdrop/os_exchange_data_unittest.cc b/ui/base/dragdrop/os_exchange_data_unittest.cc
index f1e3153ba6d5128a6c676b3b9b47c7e55bbea9df..8c5e75d78c8fec1e4a687d1e0f52d7a64d4124da 100644
--- a/ui/base/dragdrop/os_exchange_data_unittest.cc
+++ b/ui/base/dragdrop/os_exchange_data_unittest.cc
@@ -8,13 +8,19 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
+#include "ui/events/platform/platform_event_source.h"
 #include "url/gurl.h"
 
 namespace ui {
 
 class OSExchangeDataTest : public PlatformTest {
+ public:
+  OSExchangeDataTest()
+      : event_source_(ui::PlatformEventSource::CreateDefault()) {}
+
  private:
   base::MessageLoopForUI message_loop_;
+  scoped_ptr<PlatformEventSource> event_source_;
 };
 
 TEST_F(OSExchangeDataTest, StringDataGetAndSet) {