bindings: Support (deprecated) Dictionary in IDL dictionary

LayoutTests/fast/dom/idl-dictionary-unittest.html

Index: LayoutTests/fast/dom/idl-dictionary-unittest.html
diff --git a/LayoutTests/fast/dom/idl-dictionary-unittest.html b/LayoutTests/fast/dom/idl-dictionary-unittest.html
index caabc619843076aa3ecfe4bbcba85753da6cf9e6..e16c77181d432d42bc06538c3e8680f268f8cc2e 100644
--- a/LayoutTests/fast/dom/idl-dictionary-unittest.html
+++ b/LayoutTests/fast/dom/idl-dictionary-unittest.html
@@ -253,6 +253,21 @@ if (window.internals && internals.dictionaryTest) {
     shouldThrow("dictionaryTest.set({eventTargetOrNullMember: {}})");
     debug('');
 
+    debug('Test for passing Dictionary (not IDL dictionary)');
+    dictionaryTest.set({
+        dictionaryMember: {'foo': 'x', 'bar': 'y'}
+    });
+    properties = dictionaryTest.getDictionaryMemberProperties();
+    shouldBeEqualToString('properties.foo', 'x');
+    shouldBeEqualToString('properties.bar', 'y');
+    shouldBeUndefined('properties.baz');
+    dictionaryTest.set({dictionaryMember: undefined});
+    properties = dictionaryTest.getDictionaryMemberProperties();
+    shouldBe('properties', '{}');
+    shouldThrow("dictionaryTest.set({dictionaryMember: 42})");
+    shouldThrow("dictionaryTest.set({dictionaryMember: 'foo'})");
+    debug('');
+
     debug('Test for derived dictionary');
     dictionaryTest.setDerived({ requiredBooleanMember: true });
     derived = dictionaryTest.getDerived();