Revert grpc upgrade
Due to a grpc bug breaking Bazel inside docer in Bazel 3.4.0, we have to revert the upgrade of grpc 1.26.0
Revert third_party/grpc/BUILD
This partially reverts commit 2ed3980.
Revert "Upgrade gRPC to 1.26.0"
This reverts commit dfbf87c9196a15d491e9cbb81ee2d3da416cc0c2.
Closes https://github.com/bazelbuild/bazel/pull/11758
diff --git a/third_party/grpc/include/grpcpp/grpcpp.h b/third_party/grpc/include/grpcpp/grpcpp.h
new file mode 100644
index 0000000..aa8a242
--- /dev/null
+++ b/third_party/grpc/include/grpcpp/grpcpp.h
@@ -0,0 +1,68 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/// \mainpage gRPC C++ API
+///
+/// The gRPC C++ API mainly consists of the following classes:
+/// <br>
+/// - grpc::Channel, which represents the connection to an endpoint. See [the
+/// gRPC Concepts page](https://grpc.io/docs/guides/concepts.html) for more
+/// details. Channels are created by the factory function grpc::CreateChannel.
+///
+/// - grpc::CompletionQueue, the producer-consumer queue used for all
+/// asynchronous communication with the gRPC runtime.
+///
+/// - grpc::ClientContext and grpc::ServerContext, where optional configuration
+/// for an RPC can be set, such as setting custom metadata to be conveyed to the
+/// peer, compression settings, authentication, etc.
+///
+/// - grpc::Server, representing a gRPC server, created by grpc::ServerBuilder.
+///
+/// Streaming calls are handled with the streaming classes in
+/// \ref sync_stream.h and
+/// \ref async_stream.h.
+///
+/// Refer to the
+/// [examples](https://github.com/grpc/grpc/blob/master/examples/cpp)
+/// for code putting these pieces into play.
+
+#ifndef GRPCPP_GRPCPP_H
+#define GRPCPP_GRPCPP_H
+
+// Pragma for http://include-what-you-use.org/ tool, tells that following
+// headers are not private for grpcpp.h and are part of its interface.
+// IWYU pragma: begin_exports
+#include <grpc/grpc.h>
+
+#include <grpcpp/channel.h>
+#include <grpcpp/client_context.h>
+#include <grpcpp/completion_queue.h>
+#include <grpcpp/create_channel.h>
+#include <grpcpp/create_channel_posix.h>
+#include <grpcpp/server.h>
+#include <grpcpp/server_builder.h>
+#include <grpcpp/server_context.h>
+#include <grpcpp/server_posix.h>
+// IWYU pragma: end_exports
+
+namespace grpc {
+/// Return gRPC library version.
+grpc::string Version();
+} // namespace grpc
+
+#endif // GRPCPP_GRPCPP_H
