command_buffer: Add support for creating non-WebGL ES 3 contexts

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,
   },
   'includes': [
     'gpu_common.gypi',
@@ skipping 333 matching lines @@
         'gles2_cmd_helper',
         'gles2_c_lib',
         #'gl_unittests',
       ],
       'defines': [
         'GL_GLEXT_PROTOTYPES',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
         'command_buffer/tests/compressed_texture_test.cc',
+        'command_buffer/tests/es3_misc_functions_unittest.cc',
         'command_buffer/tests/gl_bind_uniform_location_unittest.cc',
         'command_buffer/tests/gl_chromium_framebuffer_multisample_unittest.cc',
         'command_buffer/tests/gl_chromium_path_rendering_unittest.cc',
         'command_buffer/tests/gl_clear_framebuffer_unittest.cc',
         'command_buffer/tests/gl_compressed_copy_texture_CHROMIUM_unittest.cc',
         'command_buffer/tests/gl_copy_texture_CHROMIUM_unittest.cc',
         'command_buffer/tests/gl_depth_texture_unittest.cc',
         'command_buffer/tests/gl_gpu_memory_buffer_unittest.cc',
         'command_buffer/tests/gl_lose_context_chromium_unittest.cc',
         'command_buffer/tests/gl_manager.cc',
@@ skipping 440 matching lines @@
             '../third_party/angle/build/common_defines.gypi',
           ],
           'sources': [
             'angle_deqp_tests_main.cc',
           ],
         },
       ],
     }]
   ],
 }