Removed direct inclusion of GL headers from gl_utils.h....

gpu/command_buffer/service/gl_utils.h

 // Copyright (c) 2009 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.
 
 // This file includes all the necessary GL headers and implements some useful
 // utilities.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_GL_UTILS_H_
 #define GPU_COMMAND_BUFFER_SERVICE_GL_UTILS_H_
 
@@ skipping 36 matching lines @@
     #define glRenderbufferStorageEXT glRenderbufferStorage
 
     // Texture Objects
     #define glGenerateMipmapEXT glGenerateMipmap
 
   #else  // !GLES2_GPU_SERVICE_BACKEND_NATIVE_GLES2
     #include <GL/glew.h>  // NOLINT
     #include <GL/osmew.h>
     #if defined(OS_WIN)
       #include <GL/wglew.h>  // NOLINT
-      #include <windows.h>  // NOLINT
     #elif defined(OS_LINUX)
       #include <GL/glxew.h>  // NOLINT
-      #include <GL/glx.h>  // NOLINT
-    #elif defined(OS_MACOSX)
-      #include <OpenGL/OpenGL.h>  // NOLINT
     #endif  // OS_WIN
 
     // GLES2 defines not part of Desktop GL
     // Shader Precision-Specified Types
     #define GL_LOW_FLOAT                      0x8DF0
     #define GL_MEDIUM_FLOAT                   0x8DF1
     #define GL_HIGH_FLOAT                     0x8DF2
     #define GL_LOW_INT                        0x8DF3
     #define GL_MEDIUM_INT                     0x8DF4
     #define GL_HIGH_INT                       0x8DF5
@@ skipping 17 matching lines @@
 #ifdef GL_ERROR_DEBUGGING
 #define CHECK_GL_ERROR() do {                                           \
     GLenum gl_error = glGetError();                                     \
     LOG_IF(ERROR, gl_error != GL_NO_ERROR) << "GL Error :" << gl_error; \
   } while (0)
 #else  // GL_ERROR_DEBUGGING
 #define CHECK_GL_ERROR() void(0)
 #endif  // GL_ERROR_DEBUGGING
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_GL_UTILS_H_