nearby: snapshot of cl/317978613

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I4bf367877a986910bb03e1c54aa972b4bcd59942

cpp/platform_v2/impl/g3/condition_variable.h

@@ -19,6 +19,11 @@ class ConditionVariable : public api::ConditionVariable {
     cond_var_.Wait(mutex_);
     return {Exception::kSuccess};
   }
+  Exception Wait(absl::Duration timeout) override {
+    return cond_var_.WaitWithTimeout(mutex_, timeout)
+               ? Exception{Exception::kTimeout}
+               : Exception{Exception::kSuccess};
+  }
   void Notify() override { cond_var_.SignalAll(); }
 
  private: