Only call OnActiveWindowChanged() for NotifyNormal FocusIn/FocusOut events.

ui/views/widget/desktop_aura/x11_desktop_handler.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 "ui/views/widget/desktop_aura/x11_desktop_handler.h"
 
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 
 #include "base/message_loop/message_loop.h"
@@ skipping 118 matching lines @@
   // There is nothing else that we can do. Pretend that we have been
   // deactivated and ignore keyboard input in DesktopWindowTreeHostX11.
   OnActiveWindowChanged(window, NOT_ACTIVE);
 }
 
 bool X11DesktopHandler::IsActiveWindow(::Window window) const {
   return window == current_window_ && current_window_active_state_ == ACTIVE;
 }
 
 void X11DesktopHandler::ProcessXEvent(XEvent* event) {
+  // Ignore focus events in modes other than NotifyNormal (i.e. NotifyGrab), as
+  // they are always sent when the pointer is over our window, even if the
+  // input focus is in a different window.
+  if (event->xfocus.mode != NotifyNormal)
+    return;
+
   switch (event->type) {
     case FocusIn:
       if (current_window_ != event->xfocus.window)
         OnActiveWindowChanged(event->xfocus.window, ACTIVE);
       break;
     case FocusOut:
       if (current_window_ == event->xfocus.window)
         OnActiveWindowChanged(None, NOT_ACTIVE);
       break;
     default:
@@ skipping 86 matching lines @@
     ui::XMenuList::GetInstance()->MaybeUnregisterMenu(window);
   }
 
   if (event_type == DestroyNotify) {
     // Notify the XForeignWindowManager that |window| has been destroyed.
     ui::XForeignWindowManager::GetInstance()->OnWindowDestroyed(window);
   }
 }
 
 }  // namespace views