Add hack so VoiceOver speaks updates to injected live regions.

content/browser/accessibility/browser_accessibility_cocoa.h

 // 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.
 
 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_COCOA_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_nsobject.h"
@@ skipping 30 matching lines @@
 // the manager.
 - (content::BrowserAccessibilityDelegate*)delegate;
 
 // Convert the local objet's origin to a global point.
 - (NSPoint)pointInScreen:(NSPoint)origin
                     size:(NSSize)size;
 
 // Return the method name for the given attribute. For testing only.
 - (NSString*)methodNameForAttribute:(NSString*)attribute;
 
+// Swap the children array with the given scoped_nsobject.
+- (void)swapChildren:(base::scoped_nsobject<NSMutableArray>*)other;
+
 // Internally-used method.
 @property(nonatomic, readonly) NSPoint origin;
 
 // Children is an array of BrowserAccessibility objects, representing
 // the accessibility children of this object.
 @property(nonatomic, readonly) NSString* accessKey;
 @property(nonatomic, readonly) NSNumber* ariaAtomic;
 @property(nonatomic, readonly) NSNumber* ariaBusy;
 @property(nonatomic, readonly) NSString* ariaLive;
 @property(nonatomic, readonly) NSString* ariaRelevant;
@@ skipping 45 matching lines @@
 @property(nonatomic, readonly) NSString* valueDescription;
 @property(nonatomic, readonly) NSValue* visibleCharacterRange;
 @property(nonatomic, readonly) NSArray* visibleCells;
 @property(nonatomic, readonly) NSArray* visibleColumns;
 @property(nonatomic, readonly) NSArray* visibleRows;
 @property(nonatomic, readonly) NSNumber* visited;
 @property(nonatomic, readonly) id window;
 @end
 
 #endif // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_COCOA_H_