Add Dart_ListGetRange

runtime/include/dart_api.h

Index: runtime/include/dart_api.h
diff --git a/runtime/include/dart_api.h b/runtime/include/dart_api.h
index d3f54b1b48ede03ca59aad692b1cbabd5994f12d..da43ac00a9e0fd4db35c7070caa91f36c970bf5b 100755
--- a/runtime/include/dart_api.h
+++ b/runtime/include/dart_api.h
@@ -1841,6 +1841,25 @@ DART_EXPORT Dart_Handle Dart_ListGetAt(Dart_Handle list,
                                        intptr_t index);
 
 /**
+* Gets a range of Objects from a List.
+*
+* If any of the requested index values are out of bounds, an error occurs.
+*
+* May generate an unhandled exception error.
+*
+* \param list A List.
+* \param offset The offset of the first item to get.
+* \param length The number of items to get.
+* \param result A pointer to fill with the objects.
+*
+* \return Success if no error occurs during the operation.
+*/
+DART_EXPORT Dart_Handle Dart_ListGetRange(Dart_Handle list,
+                                          intptr_t offset,
+                                          intptr_t length,
+                                          Dart_Handle* result);
+
+/**
  * Sets the Object at some index of a List.
  *
  * If the index is out of bounds, an error occurs.