Roll 50: Copied IDLs, PYTHON scripts from WebKit removed deleted files in WebCore

core/css/cssom/PositionValue.idl

Index: core/css/cssom/PositionValue.idl
diff --git a/core/css/cssom/PositionValue.idl b/core/css/cssom/PositionValue.idl
new file mode 100644
index 0000000000000000000000000000000000000000..5e405ec440224d8214b94720e387edcbeabd3ce7
--- /dev/null
+++ b/core/css/cssom/PositionValue.idl
@@ -0,0 +1,11 @@
+// Copyright 2016 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.
+
+[
+    Constructor(LengthValue x, LengthValue y),
+    RuntimeEnabled=CSSTypedOM
+] interface PositionValue : StyleValue {
+    readonly attribute LengthValue x;
+    readonly attribute LengthValue y;
+};