Added the selected text marker range to the dictionary for the selection change notification

content/browser/accessibility/browser_accessibility_cocoa.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 <execinfo.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #import "content/browser/accessibility/browser_accessibility_cocoa.h"
 
@@ skipping 1757 matching lines @@
     return [[[NSAttributedString alloc] initWithString:text] autorelease];
   }
 
   if ([attribute isEqualToString:@"AXNextTextMarkerForTextMarker"]) {
     BrowserAccessibility* object;
     int offset;
     if (!GetTextMarkerData(parameter, &object, &offset))
       return nil;
 
     DCHECK(object);
-    if (object->IsTextOnlyObject() &&
+    if ((object->IsSimpleTextControl() || object->IsTextOnlyObject()) &&
         offset < static_cast<int>(object->GetText().length())) {
       ++offset;
     } else {
-      offset = 0;
       while (object &&
              !(object->IsTextOnlyObject() && object->GetText().length() == 0)) {
         object = BrowserAccessibilityManager::NextTextOnlyObject(object);
       }
       if (!object)
         return nil;
 
       offset = 0;
     }
 
     return CreateTextMarker(*object, offset);
   }
 
   if ([attribute isEqualToString:@"AXPreviousTextMarkerForTextMarker"]) {
     BrowserAccessibility* object;
     int offset;
     if (!GetTextMarkerData(parameter, &object, &offset))
       return nil;
 
     DCHECK(object);
-    if (object->IsTextOnlyObject() && offset > 0) {
+    if ((object->IsSimpleTextControl() || object->IsTextOnlyObject()) &&
+        offset > 0) {
       --offset;
     } else {
       while (object &&
              !(object->IsTextOnlyObject() && object->GetText().length() == 0)) {
         object = BrowserAccessibilityManager::PreviousTextOnlyObject(object);
       }
       if (!object)
         return nil;
 
       offset = object->GetText().length() - 1;
@@ skipping 510 matching lines @@
   if (!browserAccessibility_)
     return [super hash];
   return browserAccessibility_->GetId();
 }
 
 - (BOOL)accessibilityShouldUseUniqueId {
   return YES;
 }
 
 @end