Support for [Clamp] and [EnforceRange] to 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 2de66ef7c1a83fa04ad28437aba71dcdf141f48c..474e13debfb9a06ba537a314c7b45549628c89a2 100644
--- a/LayoutTests/fast/dom/idl-dictionary-unittest.html
+++ b/LayoutTests/fast/dom/idl-dictionary-unittest.html
@@ -127,5 +127,15 @@ if (window.internals && internals.dictionaryTest) {
     shouldThrow("dictionaryTest.set(42)");
     shouldThrow("dictionaryTest.set('string')");
     debug('');
+
+    debug('Test for [Clamp] member');
+    dictionaryTest.set({
+        longMember: 2147483648,
+        longMemberWithClamp: 2147483648
+    });
+    dict = dictionaryTest.get();
+    shouldBe('dict.longMember', '-2147483648');
+    shouldBe('dict.longMemberWithClamp', '2147483647');
+    debug('');
 }
 </script>