Update pdfium/annots/annotation_squiggly_expected.pdf.0.png with actual squiggly annotation.

Also, add a test case for squiggly annotation with opacity and longer
length of squiggly annotation.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/2204153003 .
diff --git a/pdfium/annots/annotation_squiggly_expected.pdf.0.png b/pdfium/annots/annotation_squiggly_expected.pdf.0.png
index a5add2b..22b3ea4 100644
--- a/pdfium/annots/annotation_squiggly_expected.pdf.0.png
+++ b/pdfium/annots/annotation_squiggly_expected.pdf.0.png
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diff --git a/pdfium/annots/annotation_squiggly_opacity.pdf b/pdfium/annots/annotation_squiggly_opacity.pdf
new file mode 100644
index 0000000..7aadc09
--- /dev/null
+++ b/pdfium/annots/annotation_squiggly_opacity.pdf
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diff --git a/pdfium/annots/annotation_squiggly_opacity_expected.pdf.0.png b/pdfium/annots/annotation_squiggly_opacity_expected.pdf.0.png
new file mode 100644
index 0000000..fdb1af8
--- /dev/null
+++ b/pdfium/annots/annotation_squiggly_opacity_expected.pdf.0.png
Binary files differ