Don't require expectations file for DumpAccessibility tests.

content/browser/accessibility/accessibility_tree_formatter_mac.mm

 // 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 "content/browser/accessibility/accessibility_tree_formatter.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
@@ skipping 282 matching lines @@
                    FormatCoordinates(kSizeDictAttr,
                                      kWidthDictAttr, kHeightDictAttr, *d_value),
                    &line);
   }
 
   return line;
 }
 
 // static
 const base::FilePath::StringType
-AccessibilityTreeFormatter::GetActualFileSuffix() {
-  return FILE_PATH_LITERAL("-actual-mac.txt");
-}
-
-// static
-const base::FilePath::StringType
 AccessibilityTreeFormatter::GetExpectedFileSuffix() {
   return FILE_PATH_LITERAL("-expected-mac.txt");
 }
 
 // static
 const string AccessibilityTreeFormatter::GetAllowEmptyString() {
   return "@MAC-ALLOW-EMPTY:";
 }
 
 // static
 const string AccessibilityTreeFormatter::GetAllowString() {
   return "@MAC-ALLOW:";
 }
 
 // static
 const string AccessibilityTreeFormatter::GetDenyString() {
   return "@MAC-DENY:";
 }
 
 }  // namespace content