[SVG2] Add support for marker orient="auto-start-reverse".

LayoutTests/svg/markers/marker-orientation-02-expected.svg

Index: LayoutTests/svg/markers/marker-orientation-02-expected.svg
diff --git a/LayoutTests/svg/markers/marker-orientation-02-expected.svg b/LayoutTests/svg/markers/marker-orientation-02-expected.svg
new file mode 100644
index 0000000000000000000000000000000000000000..0dc75c1f2c706d0453cccbcb1e6775220bc1260d
--- /dev/null
+++ b/LayoutTests/svg/markers/marker-orientation-02-expected.svg
@@ -0,0 +1,69 @@
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:xlink="http://www.w3.org/1999/xlink">
+  <title>Reference for test that marker orientation is correct at the end of
+    arcs when orient="auto-start-reverse" is used</title>
+  <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=769115 -->
+
+  <defs>
+    <g id="m1" transform="translate(-20,-20)" fill="blue">
+      <rect x="5" y="15" width="22" height="10"/>
+      <path d="M 25,10 35,20 25,30 z"/>
+    </g>
+
+    <g id="m2" transform="translate(-20,-20)" fill="red">
+      <rect x="5" y="15" width="22" height="10"/>
+      <path d="M 25,10 35,20 25,30 z"/>
+    </g>
+  </defs>
+
+  <g fill="none">
+    <!-- arcs that go from the left of the circle to... -->
+    <g>
+      <!-- ...90 degrees anti-clockwise -->
+      <use xlink:href="#m1" transform="translate(100,100)rotate(270)"/>
+      <use xlink:href="#m2" transform="rotate(-90,150,100)translate(100,100)rotate(90)"/>
+      <!-- ...180 degrees anti-clockwise -->
+      <use xlink:href="#m2" transform="rotate(-180,150,100)translate(100,100)rotate(90)"/>
+      <!-- ...270 degrees anti-clockwise -->
+      <use xlink:href="#m2" transform="rotate(-270,150,100)translate(100,100)rotate(90)"/>
+    </g>
+
+    <!-- arcs that go from the left of the circle to... -->
+    <g transform="translate(250,0)">
+      <!-- ...90 degrees anti-clockwise -->
+      <use xlink:href="#m1" transform="translate(100,100)rotate(90)"/>
+      <use xlink:href="#m2" transform="rotate(90,150,100)translate(100,100)rotate(-90)"/>
+      <!-- ...180 degrees anti-clockwise -->
+      <use xlink:href="#m2" transform="rotate(180,150,100)translate(100,100)rotate(-90)"/>
+      <!-- ...270 degrees anti-clockwise -->
+      <use xlink:href="#m2" transform="rotate(270,150,100)translate(100,100)rotate(-90)"/>
+    </g>
+
+    <!-- arcs that go from the right of the circle to... -->
+    <g transform="translate(0,250)">
+      <!-- ...90 degrees anti-clockwise -->
+      <use xlink:href="#m1" transform="translate(200,100)rotate(270)"/>
+      <use xlink:href="#m2" transform="rotate(90,150,100)translate(200,100)rotate(90)"/>
+      <!-- ...180 degrees anti-clockwise -->
+      <use xlink:href="#m2" transform="rotate(180,150,100)translate(200,100)rotate(90)"/>
+      <!-- ...270 degrees anti-clockwise -->
+      <use xlink:href="#m2" transform="rotate(270,150,100)translate(200,100)rotate(90)"/>
+    </g>
+
+    <!-- arcs that go from the right of the circle to... -->
+    <g transform="translate(250,250)">
+      <!-- ...90 degrees clockwise -->
+      <use xlink:href="#m1" transform="translate(200,100)rotate(90)"/>
+      <use xlink:href="#m2" transform="rotate(-90,150,100)translate(200,100)rotate(-90)"/>
+      <!-- ...180 degrees clockwise -->
+      <use xlink:href="#m2" transform="rotate(-180,150,100)translate(200,100)rotate(-90)"/>
+      <!-- ...270 degrees clockwise -->
+      <use xlink:href="#m2" transform="rotate(-270,150,100)translate(200,100)rotate(-90)"/>
+    </g>
+  </g>
+
+</svg>