Revert of Move geometry interface files to geometry directory.

third_party/WebKit/Source/core/dom/DOMPointReadOnly.idl

+// 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.
+
+// https://drafts.fxtf.org/geometry/#dompointreadonly
+
+[
+    Constructor(optional unrestricted double x = 0, optional unrestricted double y = 0,
+                optional unrestricted double z = 0, optional unrestricted double w = 1),
+    Exposed=(Window,Worker),
+    RuntimeEnabled=GeometryInterfaces,
+] interface DOMPointReadOnly {
+    [NewObject] static DOMPointReadOnly fromPoint(optional DOMPointInit other);
+
+    readonly attribute unrestricted double x;
+    readonly attribute unrestricted double y;
+    readonly attribute unrestricted double z;
+    readonly attribute unrestricted double w;
+
+    [RaisesException] DOMPoint matrixTransform(optional DOMMatrixInit matrix);
+
+    serializer = { attribute };
+};