Update pdfium/annots/annotation_circle_expected.pdf.0.png with actual circle annotation.

Also, add test cases for circle annotation with fill, opacity, dash
border, and ellipse.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/2225413003 .
diff --git a/pdfium/annots/annotation_circle_dash.pdf b/pdfium/annots/annotation_circle_dash.pdf
new file mode 100644
index 0000000..8d266d2
--- /dev/null
+++ b/pdfium/annots/annotation_circle_dash.pdf
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diff --git a/pdfium/annots/annotation_circle_dash_expected.pdf.0.png b/pdfium/annots/annotation_circle_dash_expected.pdf.0.png
new file mode 100644
index 0000000..7530689
--- /dev/null
+++ b/pdfium/annots/annotation_circle_dash_expected.pdf.0.png
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diff --git a/pdfium/annots/annotation_circle_expected.pdf.0.png b/pdfium/annots/annotation_circle_expected.pdf.0.png
index 98742e1..7147dc3 100644
--- a/pdfium/annots/annotation_circle_expected.pdf.0.png
+++ b/pdfium/annots/annotation_circle_expected.pdf.0.png
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diff --git a/pdfium/annots/annotation_circle_fill_opacity.pdf b/pdfium/annots/annotation_circle_fill_opacity.pdf
new file mode 100644
index 0000000..726a4d9
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+++ b/pdfium/annots/annotation_circle_fill_opacity.pdf
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diff --git a/pdfium/annots/annotation_circle_fill_opacity_expected.pdf.0.png b/pdfium/annots/annotation_circle_fill_opacity_expected.pdf.0.png
new file mode 100644
index 0000000..6a80706
--- /dev/null
+++ b/pdfium/annots/annotation_circle_fill_opacity_expected.pdf.0.png
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diff --git a/pdfium/annots/annotation_ellipse.pdf b/pdfium/annots/annotation_ellipse.pdf
new file mode 100644
index 0000000..ecb3261
--- /dev/null
+++ b/pdfium/annots/annotation_ellipse.pdf
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diff --git a/pdfium/annots/annotation_ellipse_expected.pdf.0.png b/pdfium/annots/annotation_ellipse_expected.pdf.0.png
new file mode 100644
index 0000000..382c828
--- /dev/null
+++ b/pdfium/annots/annotation_ellipse_expected.pdf.0.png
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diff --git a/pdfium/annots/annotation_ellipse_fill.pdf b/pdfium/annots/annotation_ellipse_fill.pdf
new file mode 100644
index 0000000..3d0b9c9
--- /dev/null
+++ b/pdfium/annots/annotation_ellipse_fill.pdf
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diff --git a/pdfium/annots/annotation_ellipse_fill_dash.pdf b/pdfium/annots/annotation_ellipse_fill_dash.pdf
new file mode 100644
index 0000000..832c520
--- /dev/null
+++ b/pdfium/annots/annotation_ellipse_fill_dash.pdf
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diff --git a/pdfium/annots/annotation_ellipse_fill_dash_expected.pdf.0.png b/pdfium/annots/annotation_ellipse_fill_dash_expected.pdf.0.png
new file mode 100644
index 0000000..faa6755
--- /dev/null
+++ b/pdfium/annots/annotation_ellipse_fill_dash_expected.pdf.0.png
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diff --git a/pdfium/annots/annotation_ellipse_fill_expected.pdf.0.png b/pdfium/annots/annotation_ellipse_fill_expected.pdf.0.png
new file mode 100644
index 0000000..87ccd6b
--- /dev/null
+++ b/pdfium/annots/annotation_ellipse_fill_expected.pdf.0.png
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