Move some accessibility methods, enums and interfaces into the content/public API.

content/browser/accessibility/dump_accessibility_tree_helper_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/dump_accessibility_tree_helper.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/files/file_path.h"
 #include "base/utf_string_conversions.h"
@@ skipping 94 matching lines @@
   Add(false, Format(node, "url='", @selector(url), "'"));
   Add(false, Format(node, "visibleCharacterRange='",
                     @selector(visibleCharacterRange), "'"));
   Add(false, Format(node, "visited='", @selector(visited), "'"));
   Add(false, FormatPosition(node));
   Add(false, FormatSize(node));
 
   return ASCIIToUTF16(prefix) + FinishLine() + ASCIIToUTF16("\n");
 }
 
+// static
 const base::FilePath::StringType
-DumpAccessibilityTreeHelper::GetActualFileSuffix()
-    const {
+DumpAccessibilityTreeHelper::GetActualFileSuffix() {
   return FILE_PATH_LITERAL("-actual-mac.txt");
 }
 
+// static
 const base::FilePath::StringType
-DumpAccessibilityTreeHelper::GetExpectedFileSuffix()
-    const {
+DumpAccessibilityTreeHelper::GetExpectedFileSuffix() {
   return FILE_PATH_LITERAL("-expected-mac.txt");
 }
 
-const std::string DumpAccessibilityTreeHelper::GetAllowEmptyString() const {
+// static
+const std::string DumpAccessibilityTreeHelper::GetAllowEmptyString() {
   return "@MAC-ALLOW-EMPTY:";
 }
 
-const std::string DumpAccessibilityTreeHelper::GetAllowString() const {
+// static
+const std::string DumpAccessibilityTreeHelper::GetAllowString() {
   return "@MAC-ALLOW:";
 }
 
-const std::string DumpAccessibilityTreeHelper::GetDenyString() const {
+// static
+const std::string DumpAccessibilityTreeHelper::GetDenyString() {
   return "@MAC-DENY:";
 }
 
 }  // namespace content