Use gflags in teartest.

client/deps/glbench/src/xlib_window.cc

 // Copyright (c) 2010 The Chromium OS 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 <gflags/gflags.h>
+
 #include "base/logging.h"
 #include "main.h"
 #include "xlib_window.h"
 
 
 Display *g_xlib_display = NULL;
 Window g_xlib_window = 0;
 
 GLint g_width = WINDOW_WIDTH;
 GLint g_height = WINDOW_HEIGHT;
-bool g_override_redirect = true;
+DEFINE_bool(override_redirect, true, "Use an override redirect window");
 
 
 bool XlibInit() {
   g_xlib_display = XOpenDisplay(0);
   if (!g_xlib_display)
     return false;
 
   int screen = DefaultScreen(g_xlib_display);
   Window root_window = RootWindow(g_xlib_display, screen);
 
   XWindowAttributes attributes;
   XGetWindowAttributes(g_xlib_display, root_window, &attributes);
 
   g_width = g_width == -1 ? attributes.width : g_width;
   g_height = g_height == -1 ? attributes.height : g_height;
   XVisualInfo* xlib_visinfo = GetXVisual();
 
   unsigned long mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask |
     CWOverrideRedirect;
   XSetWindowAttributes attr;
   attr.background_pixel = 0;
   attr.border_pixel = 0;
   attr.colormap = XCreateColormap(g_xlib_display, root_window,
                                   xlib_visinfo->visual, AllocNone);
   attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
-  attr.override_redirect = g_override_redirect ? True : False;
+  attr.override_redirect = FLAGS_override_redirect ? True : False;
   g_xlib_window = XCreateWindow(g_xlib_display, root_window,
                                 0, 0, g_width, g_height, 0,
                                 xlib_visinfo->depth, InputOutput,
                                 xlib_visinfo->visual, mask, &attr);
 
   XMapWindow(g_xlib_display, g_xlib_window);
   XSync(g_xlib_display, True);
 
   XGetWindowAttributes(g_xlib_display, g_xlib_window, &attributes);
   g_width = attributes.width;
   g_height = attributes.height;
 
   XFree(xlib_visinfo);
 
   return true;
 }