This fixes the GL build so it works....

core/core.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'target_defaults': {
     'include_dirs': [
@@ skipping 341 matching lines @@
               'cross/gl/sampler_gl.cc',
               'cross/gl/sampler_gl.h',
               'cross/gl/stream_bank_gl.cc',
               'cross/gl/stream_bank_gl.h',
               'cross/gl/texture_gl.cc',
               'cross/gl/texture_gl.h',
               'cross/gl/utils_gl-inl.h',
               'cross/gl/utils_gl.cc',
               'cross/gl/utils_gl.h',
             ],
+            'dependencies': [
+              '../build/libs.gyp:gl_libs',
+            ],
           },
         ],
         ['renderer == "d3d9" and OS == "win"',
           {
             'sources': [
               'win/d3d9/buffer_d3d9.cc',
               'win/d3d9/buffer_d3d9.h',
               'win/d3d9/d3d_entry_points.h',
               'win/d3d9/draw_element_d3d9.cc',
               'win/d3d9/draw_element_d3d9.h',
@@ skipping 113 matching lines @@
           'cross/tree_traversal_test.cc',
           'cross/vector_map_test.cc',
           'cross/vertex_source_test.cc',
           'cross/visitor_base_test.cc',
           'cross/weak_ptr_test.cc',
         ],
       },
     },
   ],
 }