Support accessible inline text boxes.

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>
 
 #import "content/browser/accessibility/browser_accessibility_cocoa.h"
 
 #include <map>
 
@@ skipping 335 matching lines @@
 
 - (NSString*)ariaRelevant {
   return NSStringForStringAttribute(
       browserAccessibility_, AccessibilityNodeData::ATTR_LIVE_RELEVANT);
 }
 
 // Returns an array of BrowserAccessibilityCocoa objects, representing the
 // accessibility children of this object.
 - (NSArray*)children {
   if (!children_) {
-    children_.reset([[NSMutableArray alloc]
-        initWithCapacity:browserAccessibility_->child_count()] );
-    for (uint32 index = 0;
-         index < browserAccessibility_->child_count();
-         ++index) {
+    uint32 childCount = browserAccessibility_->child_count();
+    if (browserAccessibility_->IsLeaf())
+      childCount = 0;

[aboxhall, 2013/10/23 16:15:21]

Extra-trivial nit: how about
uint32 childCount = 0;
if (!browserAccessibility_->IsLeaf())
   childCount = browserAccessibility_->child_count()

I realise !IsLeaf() will be the overwhelming majority case, it just seems funny
to be calling child_count() if we're just going to throw it away sometimes.

+    children_.reset([[NSMutableArray alloc] initWithCapacity:childCount]);
+    for (uint32 index = 0; index < childCount; ++index) {
       BrowserAccessibilityCocoa* child =
           browserAccessibility_->GetChild(index)->ToBrowserAccessibilityCocoa();
       if ([child isIgnored])
         [children_ addObjectsFromArray:[child children]];
       else
         [children_ addObject:child];
     }
 
     // Also, add indirect children (if any).
     const std::vector<int32>& indirectChildIds =
@@ skipping 1080 matching lines @@
     return [super hash];
   return browserAccessibility_->renderer_id();
 }
 
 - (BOOL)accessibilityShouldUseUniqueId {
   return YES;
 }
 
 @end