Added unpacking step

chrome/installer/mac/app/testing/requestCheck.dtd

Index: chrome/installer/mac/app/testing/requestCheck.dtd
diff --git a/chrome/installer/mac/app/testing/requestCheck.dtd b/chrome/installer/mac/app/testing/requestCheck.dtd
deleted file mode 100644
index 8df0bc08269665f2e1dcd3fb5bb6ca0cd17c70b6..0000000000000000000000000000000000000000
--- a/chrome/installer/mac/app/testing/requestCheck.dtd
+++ /dev/null
@@ -1,70 +0,0 @@
-<!--
-  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.
--->
-<!--
-
-  Welcome to a document type declaration (DTD).
-  This is a document that makes sure XML files are correctly formed.
-
-  Below, |request| is implied to be the root element of the XML document, whose
-  children are |os| and |app|.
--->
-<!ELEMENT request (os, app)>
-<!--
-
-  Below, this indicates that |protocol| is a required attribute of the
-  |request| element; the presence of `NMTOKEN` indicates that this attribute
-  must have a value associated with it that does not contain whitespace. `CDATA`
-  would be the more commonly used keyword for content with whitespace.
--->
-<!ATTLIST request protocol NMTOKEN #REQUIRED>
-<!--
-
-  The |os| element should not have any children and cannot have any content
-  within the tag. (<os/> and <os></os> are allowed, but <os>stuff here!</os> is
-  not a valid element.)
--->
-<!ELEMENT os EMPTY>
-<!--
-
-  This |platform| attribute is a required attribute of |os|, and its value must
-  be "mac".
--->
-<!ATTLIST os platform (mac) #REQUIRED>
-<!--
-
-  The |version|, |arch|, and |sp| attributes are optional attributes of |os|. If
-  a request's XML body has the |sp|, it may not need the version or arch; if the
-  |sp| is not included but |version| and |arch| are specified, the XML body is
-  still valid. Unfortunately there is relatively less logic available for
-  attributes, so I currently cannot reject the XML document if there is only
-  either |arch| or |version|.
--->
-<!ATTLIST os version NMTOKEN #IMPLIED>
-<!ATTLIST os arch NMTOKEN #IMPLIED>
-<!ATTLIST os sp NMTOKEN #IMPLIED>
-<!--
-
-  |app| has only one child, |updatecheck|.
--->
-<!ELEMENT app (updatecheck)>
-<!--
-
-  The |appid| attribute of the |app| element must have "com.google.Chrome" as
-  its value.
--->
-<!ATTLIST app appid (com.google.Chrome) #REQUIRED>
-<!--
-
-  The following two attributes are required; their values must not contain
-  whitespace.
--->
-<!ATTLIST app version NMTOKEN #REQUIRED>
-<!ATTLIST app lang NMTOKEN #REQUIRED>
-<!--
-
-  |updatecheck| must be an empty element.
--->
-<!ELEMENT updatecheck EMPTY>