Don't require expectations file for DumpAccessibility tests.

content/browser/accessibility/accessibility_tree_formatter_win.cc

Index: content/browser/accessibility/accessibility_tree_formatter_win.cc
diff --git a/content/browser/accessibility/accessibility_tree_formatter_win.cc b/content/browser/accessibility/accessibility_tree_formatter_win.cc
index c7ef471a616becfcf2ff70b0de13b0bae9f0cf6d..769ebeac680dfecbb9ca8122777e55ac12a01a07 100644
--- a/content/browser/accessibility/accessibility_tree_formatter_win.cc
+++ b/content/browser/accessibility/accessibility_tree_formatter_win.cc
@@ -379,12 +379,6 @@ base::string16 AccessibilityTreeFormatter::ToString(
 
 // static
 const base::FilePath::StringType
-AccessibilityTreeFormatter::GetActualFileSuffix() {
-  return FILE_PATH_LITERAL("-actual-win.txt");
-}
-
-// static
-const base::FilePath::StringType
 AccessibilityTreeFormatter::GetExpectedFileSuffix() {
   return FILE_PATH_LITERAL("-expected-win.txt");
 }