Made MessagePump a non-thread safe class.

base/message_loop/message_pump_aurax11.cc

 // Copyright (c) 2012 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_loop/message_pump_aurax11.h"
 
 #include <glib.h>
 #include <X11/X.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/XKBlib.h>
@@ skipping 121 matching lines @@
     x_source_(NULL) {
   InitializeXInput2();
   InitializeXkb();
   InitXSource();
 
   // Can't put this in the initializer list because g_xdisplay may not exist
   // until after InitXSource().
   x_root_window_ = DefaultRootWindow(g_xdisplay);
 }
 
+MessagePumpAuraX11::~MessagePumpAuraX11() {
+  g_source_destroy(x_source_);
+  g_source_unref(x_source_);
+  XCloseDisplay(g_xdisplay);
+  g_xdisplay = NULL;
+}
+
 // static
 Display* MessagePumpAuraX11::GetDefaultXDisplay() {
   if (!g_xdisplay)
     g_xdisplay = XOpenDisplay(NULL);
   return g_xdisplay;
 }
 
 // static
 bool MessagePumpAuraX11::HasXInput2() {
   return InitializeXInput2();
@@ skipping 52 matching lines @@
       GetDispatcher() ? GetDispatcher() : this;
 
   do {
     // Block until there's a message of |event_mask| type on |w|. Then remove
     // it from the queue and stuff it in |event|.
     XWindowEvent(display, xid, StructureNotifyMask, &event);
     ProcessXEvent(dispatcher, &event);
   } while (event.type != MapNotify);
 }
 
-MessagePumpAuraX11::~MessagePumpAuraX11() {
-  g_source_destroy(x_source_);
-  g_source_unref(x_source_);
-  XCloseDisplay(g_xdisplay);
-  g_xdisplay = NULL;
-}
-
 void MessagePumpAuraX11::InitXSource() {
   // CHECKs are to help track down crbug.com/113106.
   CHECK(!x_source_);
   Display* display = GetDefaultXDisplay();
   CHECK(display) << "Unable to get connection to X server";
   x_poll_.reset(new GPollFD());
   CHECK(x_poll_.get());
   x_poll_->fd = ConnectionNumber(display);
   x_poll_->events = G_IO_IN;
 
@@ skipping 67 matching lines @@
   if (FindEventTarget(xev) == x_root_window_) {
     FOR_EACH_OBSERVER(MessagePumpDispatcher, root_window_dispatchers_,
                       Dispatch(xev));
     return true;
   }
   MessagePumpDispatcher* dispatcher = GetDispatcherForXEvent(xev);
   return dispatcher ? dispatcher->Dispatch(xev) : true;
 }
 
 }  // namespace base