Added GLES3 Capabilities to the Command Buffer

gpu/command_buffer/build_gles2_cmd_buffer.py

Index: gpu/command_buffer/build_gles2_cmd_buffer.py
diff --git a/gpu/command_buffer/build_gles2_cmd_buffer.py b/gpu/command_buffer/build_gles2_cmd_buffer.py
index ab51fcd535be4453157e51729312bc6735bf6f7f..1421e7acba3c15f15c1588abeb5b1dec3cd6a1eb 100755
--- a/gpu/command_buffer/build_gles2_cmd_buffer.py
+++ b/gpu/command_buffer/build_gles2_cmd_buffer.py
@@ -82,6 +82,8 @@ _CAPABILITY_FLAGS = [
   {'name': 'scissor_test'},
   {'name': 'stencil_test',
    'state_flag': 'framebuffer_state_.clear_state_dirty'},
+  {'name': 'primitive_restart_fixed_index', 'es3': True},
+  {'name': 'rasterizer_discard', 'es3': True},
 ]
 
 _STATES = {
@@ -878,7 +880,10 @@ _NAMED_TYPE_INFO = {
   },
   'Capability': {
     'type': 'GLenum',
-    'valid': ["GL_%s" % cap['name'].upper() for cap in _CAPABILITY_FLAGS],
+    'valid': ["GL_%s" % cap['name'].upper() for cap in _CAPABILITY_FLAGS
+        if 'es3' not in cap or cap['es3'] != True],
+    'valid_es3': ["GL_%s" % cap['name'].upper() for cap in _CAPABILITY_FLAGS
+        if 'es3' in cap and cap['es3'] == True],
     'invalid': [
       'GL_CLIP_PLANE0',
       'GL_POINT_SPRITE',