Use dictionaries for context creation attributes. Eliminate custom bindings.

Source/bindings/tests/idls/core/TestPermissiveDictionary.idl

Index: Source/bindings/tests/idls/core/TestPermissiveDictionary.idl
diff --git a/Source/bindings/tests/idls/core/TestPermissiveDictionary.idl b/Source/bindings/tests/idls/core/TestPermissiveDictionary.idl
new file mode 100644
index 0000000000000000000000000000000000000000..c4a1f50c6b71bb42f6d30ce19c6bbe9ca5907c44
--- /dev/null
+++ b/Source/bindings/tests/idls/core/TestPermissiveDictionary.idl
@@ -0,0 +1,14 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This dictionary only exists to test the "permissive" dictionary
+// conversion code path. In this code path, if a non-object type is
+// seen as input while converting to the dictionary type, it is
+// treated similarly to undefined or null, instead of throwing a
+// TypeError.
+
+[PermissiveDictionaryConversion]
+dictionary TestPermissiveDictionary {
+    boolean booleanMember;
+};