nearby: snapshot as of cl/296436629

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I2cf5bf225b76f4c1541954651f3a7544a14e0cec

cpp/platform/api/future.h

@@ -0,0 +1,24 @@
+#ifndef PLATFORM_API_FUTURE_H_
+#define PLATFORM_API_FUTURE_H_
+
+#include "platform/exception.h"
+
+namespace location {
+namespace nearby {
+
+// A Future represents the result of an asynchronous computation.
+//
+// https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Future.html
+template <typename T>
+class Future {
+ public:
+  virtual ~Future() {}
+
+  virtual ExceptionOr<T>
+  get() = 0;  // throws Exception::INTERRUPTED, Exception::EXECUTION
+};
+
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_API_FUTURE_H_