Moved selection of I915 hack out of the YUV shader.

client/deps/glbench/src/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 147 matching lines @@
     if (newline)
       *newline = '\0';
     printf("# Log: %s\n", p);
     if (!newline)
       break;
     p = newline + 1;
   }
 }
 
 GLuint InitShaderProgram(const char *vertex_src, const char *fragment_src) {
+  return InitShaderProgramWithHeader(NULL, vertex_src, fragment_src);
+}
+
+GLuint InitShaderProgramWithHeader(const char* header,
+                                   const char* vertex_src,
+                                   const char* fragment_src) {
   GLuint vertex_shader = glCreateShader(GL_VERTEX_SHADER);
   GLuint fragment_shader = glCreateShader(GL_FRAGMENT_SHADER);
 
-  glShaderSource(vertex_shader, 1, &vertex_src, NULL);
-  glShaderSource(fragment_shader, 1, &fragment_src, NULL);
+  const char* header_and_body[2];
+  header_and_body[0] = header ? header : "";
+  header_and_body[1] = vertex_src;
+  glShaderSource(vertex_shader,
+                 arraysize(header_and_body), header_and_body, NULL);
+  header_and_body[1] = fragment_src;
+  glShaderSource(fragment_shader,
+                 arraysize(header_and_body), header_and_body, NULL);
 
   glCompileShader(vertex_shader);
   print_info_log(vertex_shader);
   glCompileShader(fragment_shader);
   print_info_log(fragment_shader);
 
   GLuint program = glCreateProgram();
   glAttachShader(program, vertex_shader);
   glAttachShader(program, fragment_shader);
   glLinkProgram(program);
   print_info_log(program);
   glUseProgram(program);
 
   glDeleteShader(vertex_shader);
   glDeleteShader(fragment_shader);
 
   return program;
 }
 
 } // namespace glbench