Replace the term 'poor man' with another phrase (gender-neutral fixit).

ui/gfx/x/x11_error_tracker.cc

 // Copyright 2014 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/gfx/x/x11_error_tracker.h"
 
 #include "base/logging.h"
 #include "ui/gfx/x/x11_types.h"
 
 namespace {
 
 unsigned char g_x11_error_code = 0;
 static gfx::X11ErrorTracker* g_handler = NULL;
 
 int X11ErrorHandler(Display* display, XErrorEvent* error) {
   g_x11_error_code = error->error_code;
   return 0;
 }
 
 }  // namespace
 
 namespace gfx {
 
 X11ErrorTracker::X11ErrorTracker() {
-  // This is a poor-man's check for incorrect usage. It disallows nested
+  // This is a non-exhaustive check for incorrect usage. It disallows nested
   // X11ErrorTracker instances on the same thread.
   DCHECK(g_handler == NULL);
   g_handler = this;
   XSync(GetXDisplay(), False);
   old_handler_ = XSetErrorHandler(X11ErrorHandler);
   g_x11_error_code = 0;
 }
 
 X11ErrorTracker::~X11ErrorTracker() {
   g_handler = NULL;
   XSetErrorHandler(old_handler_);
 }
 
 bool X11ErrorTracker::FoundNewError() {
   XSync(GetXDisplay(), False);
   unsigned char error = g_x11_error_code;
   g_x11_error_code = 0;
   return error != 0;
 }
 
 }  // namespace gfx