Revert of command_buffer_gles2: Implement EGL default Display as a global object

gpu/gpu.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.
 
 {
   'variables': {
     'nacl_win64_target': 0,
     'build_angle_deqp_tests%': 0,
   },
   'includes': [
@@ skipping 500 matching lines @@
     {
       # GN version: //gpu:command_buffer_gles2
       'target_name': 'command_buffer_gles2',
       'type': 'shared_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../gpu/command_buffer/command_buffer.gyp:gles2_utils',
         '../gpu/gpu.gyp:command_buffer_service',
         '../ui/gfx/gfx.gyp:gfx_geometry',
         '../ui/gl/gl.gyp:gl',
-        'command_buffer/command_buffer.gyp:gles2_utils',
         'gles2_c_lib',
         'gles2_implementation',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         # TODO(hendrikw): Move egl out of gles2_conform_support.
         'gles2_conform_support/egl/config.cc',
         'gles2_conform_support/egl/config.h',
-        'gles2_conform_support/egl/context.cc',
-        'gles2_conform_support/egl/context.h',
         'gles2_conform_support/egl/display.cc',
         'gles2_conform_support/egl/display.h',
         'gles2_conform_support/egl/egl.cc',
         'gles2_conform_support/egl/surface.cc',
         'gles2_conform_support/egl/surface.h',
         'gles2_conform_support/egl/test_support.cc',
         'gles2_conform_support/egl/test_support.h',
-        'gles2_conform_support/egl/thread_state.cc',
-        'gles2_conform_support/egl/thread_state.h',
       ],
       'defines': [
         'COMMAND_BUFFER_GLES_LIB_SUPPORT_ONLY',
         'EGLAPIENTRY=',
       ],
       'conditions': [
         ['OS=="win"', {
           'defines': [
             'EGLAPI=__declspec(dllexport)',
           ],
@@ skipping 608 matching lines @@
             ],
             'sources': [
               'gpu_unittests_apk.isolate',
             ],
           },
         ],
       },
     ],
   ],
 }