Update toNativeArray() / toRefPtrNativeArray() do not match Web IDL specification

LayoutTests/fast/canvas/canvas-lineDash-input-sequence-expected.txt

+Test that setLineDash converts input argument into a Web IDL sequence
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+* Test passing a Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Int8Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Int16Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Int32Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Uint8Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Uint16Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Uint32Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Float32Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Float64Array as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+* Test passing a Object as input.
+PASS lineDash[0] is 5
+PASS lineDash[1] is 15
+PASS lineDash[2] is 25
+PASS successfullyParsed is true
+
+TEST COMPLETE
+