aura/cros: Rename MessagePump{X => AuraX11}.

So rename the MessagePumpX, which is an aurax11 only class now to MessagePumpAuraX11 (which also simplifies the gyp files).

BUG=129075
TEST=none


Review URL: https://chromiumcodereview.appspot.com/10441028

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@139421 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/ui/aura/demo/demo_main.cc b/ui/aura/demo/demo_main.cc
index fb8e683..3ed3f99 100644
--- a/ui/aura/demo/demo_main.cc
+++ b/ui/aura/demo/demo_main.cc
@@ -23,7 +23,7 @@
 #include "ui/gfx/rect.h"
 
 #if defined(USE_X11)
-#include "base/message_pump_x.h"
+#include "base/message_pump_aurax11.h"
 #endif
 
 namespace {