    EXPECT_TRUE(webrtc_data_channel_->Send(buffer));    EXPECT_EQ(webrtc::DataChannelInterface::kClosed,             webrtc_data_channel_->state());   EXPECT_FALSE(webrtc_data_channel_->error().ok());   EXPECT_EQ(webrtc::RTCErrorType::NETWORK_ERROR,             webrtc_data_channel_->error().type());   EXPECT_EQ(webrtc::RTCErrorDetailType::NONE,             webrtc_data_channel_->error().error_detail()); }  // Tests that the DataChannel is closed if the 