Mac accessibility: Add support for AXDOMIdentifier

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/files/file_path.h"
 #include "base/json/json_writer.h"
@@ skipping 125 matching lines @@
     StringForBrowserAccessibility(value)->GetAsString(&str);
     return std::unique_ptr<base::Value>(
         StringForBrowserAccessibility((BrowserAccessibilityCocoa*)value));
   }
 
   return std::unique_ptr<base::Value>(new base::StringValue(
       SysNSStringToUTF16([NSString stringWithFormat:@"%@", value])));
 }
 
 NSArray* BuildAllAttributesArray() {
+  // Note: clang-format tries to put multiple attributes on one line,
+  // but we prefer to have one per line for readability.
+  // clang-format off
   NSArray* array = [NSArray arrayWithObjects:
       NSAccessibilityRoleDescriptionAttribute,
       NSAccessibilityTitleAttribute,
       NSAccessibilityValueAttribute,
       NSAccessibilityMinValueAttribute,
       NSAccessibilityMaxValueAttribute,
       NSAccessibilityValueDescriptionAttribute,
       NSAccessibilityDescriptionAttribute,
       NSAccessibilityHelpAttribute,
       @"AXInvalid",
       NSAccessibilityDisclosingAttribute,
       NSAccessibilityDisclosureLevelAttribute,
       @"AXAccessKey",
       @"AXARIAAtomic",
       @"AXARIABusy",
       @"AXARIAColumnCount",
       @"AXARIAColumnIndex",
       @"AXARIALive",
       @"AXARIARelevant",
       @"AXARIARowCount",
       @"AXARIARowIndex",
       @"AXARIASetSize",
       @"AXARIAPosInSet",
       NSAccessibilityColumnIndexRangeAttribute,
+      @"AXDOMIdentifier",
       @"AXDropEffects",
       NSAccessibilityEnabledAttribute,
       NSAccessibilityExpandedAttribute,
       NSAccessibilityFocusedAttribute,
       @"AXGrabbed",
       NSAccessibilityIndexAttribute,
       @"AXLoaded",
       @"AXLoadingProcess",
       NSAccessibilityNumberOfCharactersAttribute,
       NSAccessibilitySortDirectionAttribute,
       NSAccessibilityOrientationAttribute,
       NSAccessibilityPlaceholderValueAttribute,
       @"AXRequired",
       NSAccessibilityRowIndexRangeAttribute,
       NSAccessibilitySelectedChildrenAttribute,
       NSAccessibilityTitleUIElementAttribute,
       NSAccessibilityURLAttribute,
       NSAccessibilityVisibleCharacterRangeAttribute,
       NSAccessibilityVisibleChildrenAttribute,
       @"AXVisited",
       @"AXLinkedUIElements",
       nil];
+  // clang-format off
+
   return [array retain];
 }
 
 }  // namespace
 
 class AccessibilityTreeFormatterMac : public AccessibilityTreeFormatter {
  public:
   explicit AccessibilityTreeFormatterMac();
   ~AccessibilityTreeFormatterMac() override;
 
@@ skipping 132 matching lines @@
 
 const string AccessibilityTreeFormatterMac::GetAllowString() {
   return "@MAC-ALLOW:";
 }
 
 const string AccessibilityTreeFormatterMac::GetDenyString() {
   return "@MAC-DENY:";
 }
 
 }  // namespace content