Add fillRule option for hit regions on canvas2d.

Source/core/html/canvas/CanvasRenderingContext2D.cpp

Index: Source/core/html/canvas/CanvasRenderingContext2D.cpp
diff --git a/Source/core/html/canvas/CanvasRenderingContext2D.cpp b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
index 106c93fae5d436049d583a4aae50282c7165b75e..933275c0f1bb0eb8ece6ccc861e0124b756fc810 100644
--- a/Source/core/html/canvas/CanvasRenderingContext2D.cpp
+++ b/Source/core/html/canvas/CanvasRenderingContext2D.cpp
@@ -2394,6 +2394,14 @@ void CanvasRenderingContext2D::addHitRegion(const Dictionary& options, Exception
     }
 
     passOptions.path = specifiedPath;
+
+    String fillRuleString;
+    options.getWithUndefinedOrNullCheck("fillRule", fillRuleString);
+    if (fillRuleString.isEmpty() || fillRuleString != "evenodd")
+        passOptions.fillRule = RULE_NONZERO;
+    else
+        passOptions.fillRule = RULE_EVENODD;
+
     addHitRegionInternal(passOptions, exceptionState);
 }