Add a test case with a large 16-bit image.
Test case created by ballbach@google.com
BUG=583804
R=ballbach@google.com, tsepez@chromium.org
Review URL: https://codereview.chromium.org/1665603004 .
diff --git a/pdfium/bug_583804.pdf b/pdfium/bug_583804.pdf
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diff --git a/pdfium/bug_583804_expected.pdf.0.png b/pdfium/bug_583804_expected.pdf.0.png
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