Consolidate common code in checkbox_radiobutton tests

Change-Id: I46379e8b6103f339bd71ef6aeffec9048612e127
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/93372
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/testing/resources/pixel/checkbox_radiobutton.fragment b/testing/resources/pixel/checkbox_radiobutton.fragment
new file mode 100644
index 0000000..013992e
--- /dev/null
+++ b/testing/resources/pixel/checkbox_radiobutton.fragment
@@ -0,0 +1,187 @@
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diff --git a/testing/resources/pixel/checkbox_radiobutton.in b/testing/resources/pixel/checkbox_radiobutton.in
index 59d73a2..116c638 100644
--- a/testing/resources/pixel/checkbox_radiobutton.in
+++ b/testing/resources/pixel/checkbox_radiobutton.in
@@ -7,192 +7,7 @@
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+{{include checkbox_radiobutton.fragment}}
 {{xref}}
 {{trailer}}
 {{startxref}}
diff --git a/testing/resources/pixel/checkbox_radiobutton_hide.in b/testing/resources/pixel/checkbox_radiobutton_hide.in
index 2216d25..340b6d5 100644
--- a/testing/resources/pixel/checkbox_radiobutton_hide.in
+++ b/testing/resources/pixel/checkbox_radiobutton_hide.in
@@ -8,193 +8,7 @@
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+{{include checkbox_radiobutton.fragment}}
 % Make some buttons be hidden. Note that /T as an array of dict references
 % does not seem to work as expected.
 {{object 13 0}} <<
diff --git a/testing/resources/pixel/checkbox_radiobutton_reset.in b/testing/resources/pixel/checkbox_radiobutton_reset.in
index 4154ef2..869107a 100644
--- a/testing/resources/pixel/checkbox_radiobutton_reset.in
+++ b/testing/resources/pixel/checkbox_radiobutton_reset.in
@@ -8,193 +8,7 @@
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+{{include checkbox_radiobutton.fragment}}
 % Make some buttons be reset. Note that /T as an array of dict references
 % does not seem to work as expected. /Flags 1 means all fields *except*
 % those listed.