Move gl_Bench into a dep so that it can be re-used among tests

client/deps/glbench/src.orig/utils.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 <fcntl.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/mman.h>
 #include <unistd.h>
 
@@ skipping 57 matching lines @@
   glAttachShader(program, fragment_shader);
   glLinkProgram(program);
   print_info_log(program);
   glUseProgram(program);
 
   glDeleteShader(vertex_shader);
   glDeleteShader(fragment_shader);
 
   return program;
 }