aura: Fix views_unittests on linux.

base/message_pump_x.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 "base/message_pump_x.h"
 
 #include <X11/extensions/XInput2.h>
 
 #include "base/basictypes.h"
 #include "base/message_loop.h"
@@ skipping 149 matching lines @@
 }
 
 // static
 bool MessagePumpX::HasXInput2() {
   return xiopcode != -1;
 }
 
 void MessagePumpX::InitXSource() {
   DCHECK(!x_source_);
   GPollFD* x_poll = new GPollFD();
-  x_poll->fd = ConnectionNumber(g_xdisplay);
+  x_poll->fd = ConnectionNumber(GetDefaultXDisplay());
   x_poll->events = G_IO_IN;
 
   x_source_ = g_source_new(&XSourceFuncs, sizeof(GSource));
   g_source_add_poll(x_source_, x_poll);
   g_source_set_can_recurse(x_source_, FALSE);
   g_source_attach(x_source_, g_main_context_default());
 }
 
 bool MessagePumpX::ShouldCaptureXEvent(XEvent* xev) {
   return
@@ skipping 150 matching lines @@
   capture_gdk_events_[GDK_MOTION_NOTIFY] = true;
 
   capture_x_events_[GenericEvent] = true;
 }
 
 COMPILE_ASSERT(XLASTEvent >= LASTEvent, XLASTEvent_too_small);
 
 #endif  // defined(TOOLKIT_USES_GTK)
 
 }  // namespace base