Add CPDF_Dictionary::GetMutableStream().

Change-Id: I026867d04a64f9cf4c91aec62c51f27dc65512bb
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/94710
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/fxjs/cjs_field.cpp b/fxjs/cjs_field.cpp
index ff8f49a..84ddc8e 100644
--- a/fxjs/cjs_field.cpp
+++ b/fxjs/cjs_field.cpp
@@ -13,6 +13,7 @@
 #include "constants/access_permissions.h"
 #include "constants/annotation_flags.h"
 #include "constants/form_flags.h"
+#include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fpdfdoc/cpdf_formcontrol.h"
 #include "core/fpdfdoc/cpdf_formfield.h"
 #include "core/fpdfdoc/cpdf_interactiveform.h"