Fixing Line_Stroke file extensions. Updating expected images.

Bug: pdfium:782
Change-Id: I48692866fb6943afab370a6e1b3aeef15fb8874b
Reviewed-on: https://pdfium-review.googlesource.com/6912
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/xfa_specific/fx/test_case_0004/Line_Stroke.pdf.pdf b/xfa_specific/fx/test_case_0004/Line_Stroke.pdf
similarity index 100%
rename from xfa_specific/fx/test_case_0004/Line_Stroke.pdf.pdf
rename to xfa_specific/fx/test_case_0004/Line_Stroke.pdf
Binary files differ
diff --git a/xfa_specific/fx/test_case_0004/Line_Stroke_expected.pdf.0.png b/xfa_specific/fx/test_case_0004/Line_Stroke_expected.pdf.0.png
new file mode 100644
index 0000000..269423a
--- /dev/null
+++ b/xfa_specific/fx/test_case_0004/Line_Stroke_expected.pdf.0.png
Binary files differ
diff --git a/xfa_specific/fx/test_case_0004/Line_Stroke_expected.pdf.pdf.0.png b/xfa_specific/fx/test_case_0004/Line_Stroke_expected.pdf.pdf.0.png
deleted file mode 100644
index a91dfd7..0000000
--- a/xfa_specific/fx/test_case_0004/Line_Stroke_expected.pdf.pdf.0.png
+++ /dev/null
Binary files differ