Update union conversion algorithm

third_party/WebKit/LayoutTests/fast/dom/idl-union-type-unittest.html

Index: third_party/WebKit/LayoutTests/fast/dom/idl-union-type-unittest.html
diff --git a/third_party/WebKit/LayoutTests/fast/dom/idl-union-type-unittest.html b/third_party/WebKit/LayoutTests/fast/dom/idl-union-type-unittest.html
index f983d4cf8dcd3b0f18f4767bddf0d466318c9f35..0bcba685feb59baaa57df7ff4e2f035a4713b0a1 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/idl-union-type-unittest.html
+++ b/third_party/WebKit/LayoutTests/fast/dom/idl-union-type-unittest.html
@@ -145,5 +145,19 @@ if (window.internals) {
     shouldBeEqualToString('unionTypesTest.doubleOrStringOrStringSequenceNullableArg([])', 'sequence: []');
     shouldBeEqualToString('unionTypesTest.doubleOrStringOrStringSequenceNullableArg(["a", 3.14])', 'sequence: [a, 3.14]');
     shouldBeEqualToString('unionTypesTest.doubleOrStringOrStringSequenceNullableArg(new Array(3))', 'sequence: [undefined, undefined, undefined]');
+    debug('');
+
+    debug('Tests for distingushing sequence<T> and dictionary');
+    // An object is converted to dictionary.
+    shouldBeEqualToString('unionTypesTest.internalDictionaryOrStringSequenceArg({})', 'InternalDictionary');
+    // null and undefined are also converted to dictionary.
+    shouldBeEqualToString('unionTypesTest.internalDictionaryOrStringSequenceArg(null)', 'InternalDictionary');
+    shouldBeEqualToString('unionTypesTest.internalDictionaryOrStringSequenceArg(undefined)', 'InternalDictionary');
+    shouldBeEqualToString('unionTypesTest.internalDictionaryOrStringSequenceArg(["a", "b", "c"])', 'sequence<DOMString>');
 }
 </script>
+

[bashi, 2016/05/20 06:44:16]

I'll remove blank lines.

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