nearby: snapshot of cl/304428753

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I0023ac6e40456fc4a8169c3173bcbff3b5ccc476

cpp/platform/api/future.h

@@ -1,6 +1,8 @@
 #ifndef PLATFORM_API_FUTURE_H_
 #define PLATFORM_API_FUTURE_H_
 
+#include <cstdint>
+
 #include "platform/exception.h"
 
 namespace location {
@@ -16,6 +18,11 @@ class Future {
 
   virtual ExceptionOr<T>
   get() = 0;  // throws Exception::INTERRUPTED, Exception::EXECUTION
+
+  // throws Exception::INTERRUPTED, Exception::EXECUTION
+  // throws Exception::TIMEOUT if |timeout_ms| is exceeded while waiting for
+  // result.
+  virtual ExceptionOr<T> get(std::int64_t timeout_ms) = 0;
 };
 
 }  // namespace nearby