Add fillRule option for hit regions on canvas2d.

Source/core/html/canvas/HitRegion.cpp

Index: Source/core/html/canvas/HitRegion.cpp
diff --git a/Source/core/html/canvas/HitRegion.cpp b/Source/core/html/canvas/HitRegion.cpp
index d436f45a87cab471ee616f1c80042b24274bbc9a..cb2e827a0ff4962320d01b07e6e329fe44b817a3 100644
--- a/Source/core/html/canvas/HitRegion.cpp
+++ b/Source/core/html/canvas/HitRegion.cpp
@@ -14,6 +14,7 @@ HitRegion::HitRegion(const HitRegionOptions& options)
     : m_id(options.id)
     , m_control(options.control)
     , m_path(options.path)
+    , m_fillRule(options.fillRule)
 {
 }
 
@@ -44,7 +45,7 @@ bool HitRegion::contains(const LayoutPoint& point) const
     if (!m_path.boundingRect().contains(point))
         return false;
 
-    return m_path.contains(point, RULE_NONZERO);
+    return m_path.contains(point, m_fillRule);
 }
 
 void HitRegion::removePixels(const Path& clearArea)