Allow GLES2CmdDecoder to change the GLSurface associated with the default FBO.

gpu/demos/demos.gyp

 # Copyright (c) 2012 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.
 
 {
   'includes': [
     '../../ppapi/ppapi.gypi',
   ],
   'variables': {
     'chromium_code': 1,
@@ skipping 207 matching lines @@
         'compressed_textures/compressed_textures.cc',
       ],
     },
     {
       'target_name': 'occlusion_query_exe',
       'type': 'executable',
       'dependencies': [
         'gpu_demo_framework_exe',
         '../../third_party/gles2_book/gles2_book.gyp:es_util',
       ],
+      'defines': [
+        'GL_GLEXT_PROTOTYPES',
+      ],
       'sources': [
         'occlusion_query/occlusion_query.cc',
       ],
     },
   ],
   'conditions': [
     ['enable_pepper_demos==1', {
       'targets': [
         {
           'target_name': 'hello_triangle_ppapi',
@@ skipping 83 matching lines @@
             'gles2_book/example.h',
             'gles2_book/demo_texture_wrap.cc',
             '../../third_party/gles2_book/Chapter_9/TextureWrap/TextureWrap.c',
             '../../third_party/gles2_book/Chapter_9/TextureWrap/TextureWrap.h',
           ],
         },
       ],
     }],
   ],
 }