Roll forward to cl/338482889

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: Ic2bdb234e89f3c5860d1b483dd4bce689f13d057

cpp/platform/impl/g3/pipe.h

@@ -0,0 +1,44 @@
+// Copyright 2020 Google LLC
+//
+// 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
+//
+//     https://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.
+
+#ifndef PLATFORM_IMPL_G3_PIPE_H_
+#define PLATFORM_IMPL_G3_PIPE_H_
+
+#include <memory>
+
+#include "platform/base/base_pipe.h"
+#include "platform/impl/g3/condition_variable.h"
+#include "platform/impl/g3/mutex.h"
+
+namespace location {
+namespace nearby {
+namespace g3 {
+
+class Pipe : public BasePipe {
+ public:
+  Pipe() {
+    auto mutex = std::make_unique<g3::Mutex>(/*check=*/true);
+    auto cond = std::make_unique<g3::ConditionVariable>(mutex.get());
+    Setup(std::move(mutex), std::move(cond));
+  }
+  ~Pipe() override = default;
+  Pipe(Pipe &&) = delete;
+  Pipe& operator=(Pipe&&) = delete;
+};
+
+}  // namespace g3
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_IMPL_G3_PIPE_H_