Merge to XFA: Correct mistakes in test case for 507316

(cherry picked from commit ccc8b21622a7d6a7723bc04e065e0ec3666dab64)
Original Review URL: https://codereview.chromium.org/1377403003 .

TBR=thestig@chromium.org

Review URL: https://codereview.chromium.org/1384053002 .
diff --git a/testing/embedder_test.cpp b/testing/embedder_test.cpp
index 151987f..5dc5a66 100644
--- a/testing/embedder_test.cpp
+++ b/testing/embedder_test.cpp
@@ -348,7 +348,7 @@
                                           FPDF_DOCUMENT document,
                                           int page_index) {
   EmbedderTest* test = static_cast<EmbedderTest*>(info);
-  return test->delegate_->GetPage(test->m_pFormfillinfo, document, page_index);
+  return test->delegate_->GetPage(test->form_handle(), document, page_index);
 }
 
 // Can't use gtest-provided main since we need to stash the path to the