Revert 111170 - Move GL headers from gpu to third_party/khronos

ui/gfx/gl/gl.gyp

 # Copyright (c) 2011 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,
   },
 
   'targets': [
@@ skipping 71 matching lines @@
       # hard_dependency is necessary for this target because it has actions
       # that generate header files included by dependent targets. The header
       # files must be generated before the dependents are compiled. The usual
       # semantics are to allow the two targets to build concurrently.
       'hard_dependency': 1,
       'actions': [
         {
           'action_name': 'generate_gl_bindings',
           'inputs': [
             'generate_bindings.py',
-            '<(DEPTH)/third_party/khronos/GLES2/gl2ext.h',
-            '<(DEPTH)/third_party/khronos/EGL/eglext.h',
-            '<(DEPTH)/third_party/mesa/MesaLib/include/GL/glext.h',
-            '<(DEPTH)/third_party/mesa/MesaLib/include/GL/glxext.h',
-            '<(DEPTH)/third_party/mesa/MesaLib/include/GL/wglext.h',
+            '../../../gpu/GLES2/gl2ext.h',
+            '../../../gpu/EGL/eglext.h',
+            '../../../third_party/mesa/MesaLib/include/GL/glext.h',
+            '../../../third_party/mesa/MesaLib/include/GL/glxext.h',
+            '../../../third_party/mesa/MesaLib/include/GL/wglext.h',
           ],
           'outputs': [
             '<(gl_binding_output_dir)/gl_bindings_autogen_egl.cc',
             '<(gl_binding_output_dir)/gl_bindings_autogen_egl.h',
             '<(gl_binding_output_dir)/gl_bindings_autogen_gl.cc',
             '<(gl_binding_output_dir)/gl_bindings_autogen_gl.h',
             '<(gl_binding_output_dir)/gl_bindings_autogen_glx.cc',
             '<(gl_binding_output_dir)/gl_bindings_autogen_glx.h',
             '<(gl_binding_output_dir)/gl_bindings_autogen_mock.cc',
             '<(gl_binding_output_dir)/gl_bindings_autogen_osmesa.cc',
@@ skipping 83 matching lines @@
           ],
           'defines': [
             'GL_GLEXT_PROTOTYPES',
             'EGL_EGLEXT_PROTOTYPES',
           ],
         }],
       ],
     },
   ],
 }