Add changestamp field to google_apis::DocumentEntry

chrome/browser/google_apis/gdata_wapi_parser_unittest.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/google_apis/gdata_wapi_parser.h"
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/logging.h"
@@ skipping 143 matching lines @@
   EXPECT_EQ("https://file_link_parent/", file_parent_link->href().spec());
   EXPECT_EQ("application/atom+xml", file_parent_link->mime_type());
   EXPECT_EQ(ASCIIToUTF16("Medical"), file_parent_link->title());
   const Link* file_open_with_link =
     file_entry->GetLinkByType(Link::LINK_OPEN_WITH);
   ASSERT_TRUE(file_open_with_link);
   EXPECT_EQ("https://xml_file_entry_open_with_link/",
             file_open_with_link->href().spec());
   EXPECT_EQ("application/atom+xml", file_open_with_link->mime_type());
   EXPECT_EQ("the_app_id", file_open_with_link->app_id());
+  EXPECT_EQ(654321, file_open_with_link->changestamp());
 
   const Link* file_unknown_link = file_entry->GetLinkByType(Link::LINK_UNKNOWN);
   ASSERT_TRUE(file_unknown_link);
   EXPECT_EQ("https://xml_file_fake_entry_open_with_link/",
             file_unknown_link->href().spec());
   EXPECT_EQ("application/atom+xml", file_unknown_link->mime_type());
   EXPECT_EQ("", file_unknown_link->app_id());
 
   // Check a file entry.
   const DocumentEntry* document_entry = feed->entries()[2];
@@ skipping 213 matching lines @@
             DocumentEntry::ClassifyEntryKind(ENTRY_KIND_EXTERNAL_APP));
   EXPECT_EQ(DocumentEntry::KIND_OF_FOLDER,
             DocumentEntry::ClassifyEntryKind(ENTRY_KIND_FOLDER));
   EXPECT_EQ(DocumentEntry::KIND_OF_FILE,
             DocumentEntry::ClassifyEntryKind(ENTRY_KIND_FILE));
   EXPECT_EQ(DocumentEntry::KIND_OF_FILE,
             DocumentEntry::ClassifyEntryKind(ENTRY_KIND_PDF));
 }
 
 }  // namespace google_apis