Added GLES3 Capabilities to the Command Buffer

gpu/command_buffer/service/gles2_cmd_decoder_autogen.h

Index: gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h b/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
index 3c353c40fe1da0ceb254740193fda88674042a0d..9a27c2f9f4f048ccd4e29aab08ae439196cb3919 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
@@ -4871,6 +4871,14 @@ bool GLES2DecoderImpl::SetCapabilityState(GLenum cap, bool enabled) {
         framebuffer_state_.clear_state_dirty = true;
       }
       return false;
+    case GL_RASTERIZER_DISCARD:
+      state_.enable_flags.rasterizer_discard = enabled;
+      if (state_.enable_flags.cached_rasterizer_discard != enabled ||
+          state_.ignore_cached_state) {
+        state_.enable_flags.cached_rasterizer_discard = enabled;
+        return true;
+      }
+      return false;
     default:
       NOTREACHED();
       return false;