Call XSetInputFocus after XRaiseWindow when activating.

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 76 matching lines @@
     xclient.xclient.data.l[1] = CurrentTime;
     xclient.xclient.data.l[2] = None;
     xclient.xclient.data.l[3] = 0;
     xclient.xclient.data.l[4] = 0;
 
     XSendEvent(xdisplay_, x_root_window_, False,
                SubstructureRedirectMask | SubstructureNotifyMask,
                &xclient);
   } else {
     XRaiseWindow(xdisplay_, window);
+
+    // XRaiseWindow will not give input focus to the window. We now need to ask
+    // the X server to do that. Note that the call will raise an X error if the
+    // window is not mapped.
+    XSetInputFocus(xdisplay_, window, RevertToParent, CurrentTime);
+
     OnActiveWindowChanged(window);
   }
 }
 
 bool X11DesktopHandler::IsActiveWindow(::Window window) const {
   return window == current_window_;
 }
 
 void X11DesktopHandler::ProcessXEvent(const base::NativeEvent& event) {
   switch (event->type) {
@@ skipping 51 matching lines @@
 
   DesktopWindowTreeHostX11* new_host =
       views::DesktopWindowTreeHostX11::GetHostForXID(xid);
   if (new_host)
     new_host->HandleNativeWidgetActivationChanged(true);
 
   current_window_ = xid;
 }
 
 }  // namespace views