Refactor BrowserAccessibility to prepare for AXNode (re-land)

content/browser/accessibility/browser_accessibility.cc

 // 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/browser_accessibility.h"
 
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/common/accessibility_messages.h"
 
 namespace content {
 
 #if !defined(OS_MACOSX) && \
     !defined(OS_WIN) && \
     !defined(TOOLKIT_GTK) && \
     !defined(OS_ANDROID)
 // We have subclassess of BrowserAccessibility on Mac, Linux/GTK,
 // and Win. For any other platform, instantiate the base class.
 // static
 BrowserAccessibility* BrowserAccessibility::Create() {
   return new BrowserAccessibility();
 }
 #endif
 
 BrowserAccessibility::BrowserAccessibility()
     : manager_(NULL),
-      parent_(NULL),
-      index_in_parent_(0),
-      renderer_id_(0),
-      role_(0),
-      state_(0),
+      deprecated_parent_(NULL),
+      deprecated_index_in_parent_(0),
       instance_active_(false) {
+  data_.id = 0;
+  data_.role = ui::AX_ROLE_UNKNOWN;
+  data_.state = 0;
 }
 
 BrowserAccessibility::~BrowserAccessibility() {
 }
 
 bool BrowserAccessibility::PlatformIsLeaf() const {
-  if (child_count() == 0)
+  if (InternalChildCount() == 0)
     return true;
 
   // All of these roles may have children that we use as internal
   // implementation details, but we want to expose them as leaves
   // to platform accessibility APIs.
-  switch (role_) {
+  switch (GetRole()) {
     case ui::AX_ROLE_EDITABLE_TEXT:
     case ui::AX_ROLE_SLIDER:
     case ui::AX_ROLE_STATIC_TEXT:
     case ui::AX_ROLE_TEXT_AREA:
     case ui::AX_ROLE_TEXT_FIELD:
       return true;
     default:
       return false;
   }
 }
 
 uint32 BrowserAccessibility::PlatformChildCount() const {
-  return PlatformIsLeaf() ? 0 : children_.size();
+  return PlatformIsLeaf() ? 0 : InternalChildCount();
 }
 
 void BrowserAccessibility::DetachTree(
     std::vector<BrowserAccessibility*>* nodes) {
   nodes->push_back(this);
-  for (size_t i = 0; i < children_.size(); ++i)
-    children_[i]->DetachTree(nodes);
-  children_.clear();
-  parent_ = NULL;
+  for (size_t i = 0; i < InternalChildCount(); ++i)
+    InternalGetChild(i)->DetachTree(nodes);
+  deprecated_children_.clear();
+  deprecated_parent_ = NULL;
 }
 
 void BrowserAccessibility::InitializeTreeStructure(
     BrowserAccessibilityManager* manager,
     BrowserAccessibility* parent,
-    int32 renderer_id,
+    int32 id,
     int32 index_in_parent) {
   manager_ = manager;
-  parent_ = parent;
-  renderer_id_ = renderer_id;
-  index_in_parent_ = index_in_parent;
+  deprecated_parent_ = parent;
+  data_.id = id;
+  deprecated_index_in_parent_ = index_in_parent;
 }
 
 void BrowserAccessibility::InitializeData(const ui::AXNodeData& src) {
-  DCHECK_EQ(renderer_id_, src.id);
-  role_ = src.role;
-  state_ = src.state;
-  string_attributes_ = src.string_attributes;
-  int_attributes_ = src.int_attributes;
-  float_attributes_ = src.float_attributes;
-  bool_attributes_ = src.bool_attributes;
-  intlist_attributes_ = src.intlist_attributes;
-  html_attributes_ = src.html_attributes;
-  location_ = src.location;
+  DCHECK_EQ(data_.id, src.id);
+  data_ = src;
   instance_active_ = true;
 
   GetStringAttribute(ui::AX_ATTR_NAME, &name_);
   GetStringAttribute(ui::AX_ATTR_VALUE, &value_);
 
   PreInitialize();
 }
 
 bool BrowserAccessibility::IsNative() const {
   return false;
 }
 
 void BrowserAccessibility::SwapChildren(
     std::vector<BrowserAccessibility*>& children) {
-  children.swap(children_);
+  children.swap(deprecated_children_);
 }
 
 void BrowserAccessibility::UpdateParent(BrowserAccessibility* parent,
                                         int index_in_parent) {
-  parent_ = parent;
-  index_in_parent_ = index_in_parent;
+  deprecated_parent_ = parent;
+  deprecated_index_in_parent_ = index_in_parent;
 }
 
 void BrowserAccessibility::SetLocation(const gfx::Rect& new_location) {
-  location_ = new_location;
+  data_.location = new_location;
 }
 
 bool BrowserAccessibility::IsDescendantOf(
     BrowserAccessibility* ancestor) {
   if (this == ancestor) {
     return true;
-  } else if (parent_) {
-    return parent_->IsDescendantOf(ancestor);
+  } else if (GetParent()) {
+    return GetParent()->IsDescendantOf(ancestor);
   }
 
   return false;
 }
 
 BrowserAccessibility* BrowserAccessibility::PlatformGetChild(
     uint32 child_index) const {
-  DCHECK(child_index < children_.size());
-  return children_[child_index];
+  DCHECK(child_index < InternalChildCount());
+  return InternalGetChild(child_index);
 }
 
 BrowserAccessibility* BrowserAccessibility::GetPreviousSibling() {
-  if (parent_ && index_in_parent_ > 0)
-    return parent_->children_[index_in_parent_ - 1];
+  if (GetParent() && GetIndexInParent() > 0)
+    return GetParent()->InternalGetChild(GetIndexInParent() - 1);
 
   return NULL;
 }
 
 BrowserAccessibility* BrowserAccessibility::GetNextSibling() {
-  if (parent_ &&
-      index_in_parent_ >= 0 &&
-      index_in_parent_ < static_cast<int>(parent_->children_.size() - 1)) {
-    return parent_->children_[index_in_parent_ + 1];
+  if (GetParent() &&
+      GetIndexInParent() >= 0 &&
+      GetIndexInParent() < static_cast<int>(
+          GetParent()->InternalChildCount() - 1)) {
+    return GetParent()->InternalGetChild(GetIndexInParent() + 1);
   }
 
   return NULL;
 }
 
 gfx::Rect BrowserAccessibility::GetLocalBoundsRect() const {
-  gfx::Rect bounds = location_;
+  gfx::Rect bounds = GetLocation();
 
   // Walk up the parent chain. Every time we encounter a Web Area, offset
   // based on the scroll bars and then offset based on the origin of that
   // nested web area.
-  BrowserAccessibility* parent = parent_;
+  BrowserAccessibility* parent = GetParent();
   bool need_to_offset_web_area =
-      (role_ == ui::AX_ROLE_WEB_AREA ||
-       role_ == ui::AX_ROLE_ROOT_WEB_AREA);
+      (GetRole() == ui::AX_ROLE_WEB_AREA ||
+       GetRole() == ui::AX_ROLE_ROOT_WEB_AREA);
   while (parent) {
     if (need_to_offset_web_area &&
-        parent->location().width() > 0 &&
-        parent->location().height() > 0) {
-      bounds.Offset(parent->location().x(), parent->location().y());
+        parent->GetLocation().width() > 0 &&
+        parent->GetLocation().height() > 0) {
+      bounds.Offset(parent->GetLocation().x(), parent->GetLocation().y());
       need_to_offset_web_area = false;
     }
 
     // On some platforms, we don't want to take the root scroll offsets
     // into account.
-    if (parent->role() == ui::AX_ROLE_ROOT_WEB_AREA &&
+    if (parent->GetRole() == ui::AX_ROLE_ROOT_WEB_AREA &&
         !manager()->UseRootScrollOffsetsWhenComputingBounds()) {
       break;
     }
 
-    if (parent->role() == ui::AX_ROLE_WEB_AREA ||
-        parent->role() == ui::AX_ROLE_ROOT_WEB_AREA) {
+    if (parent->GetRole() == ui::AX_ROLE_WEB_AREA ||
+        parent->GetRole() == ui::AX_ROLE_ROOT_WEB_AREA) {
       int sx = 0;
       int sy = 0;
       if (parent->GetIntAttribute(ui::AX_ATTR_SCROLL_X, &sx) &&
           parent->GetIntAttribute(ui::AX_ATTR_SCROLL_Y, &sy)) {
         bounds.Offset(-sx, -sy);
       }
       need_to_offset_web_area = true;
     }
-    parent = parent->parent();
+    parent = parent->GetParent();
   }
 
   return bounds;
 }
 
 gfx::Rect BrowserAccessibility::GetGlobalBoundsRect() const {
   gfx::Rect bounds = GetLocalBoundsRect();
 
   // Adjust the bounds by the top left corner of the containing view's bounds
   // in screen coordinates.
   bounds.Offset(manager_->GetViewBounds().OffsetFromOrigin());
 
   return bounds;
 }
 
 gfx::Rect BrowserAccessibility::GetLocalBoundsForRange(int start, int len)
     const {
-  if (role() != ui::AX_ROLE_STATIC_TEXT) {
+  if (GetRole() != ui::AX_ROLE_STATIC_TEXT) {
     // Apply recursively to all static text descendants. For example, if
     // you call it on a div with two text node children, it just calls
     // GetLocalBoundsForRange on each of the two children (adjusting
     // |start| for each one) and unions the resulting rects.
     gfx::Rect bounds;
-    for (size_t i = 0; i < children_.size(); ++i) {
-      BrowserAccessibility* child = children_[i];
+    for (size_t i = 0; i < InternalChildCount(); ++i) {
+      BrowserAccessibility* child = InternalGetChild(i);
       int child_len = child->GetStaticTextLenRecursive();
       if (start < child_len && start + len > 0) {
         gfx::Rect child_rect = child->GetLocalBoundsForRange(start, len);
         bounds.Union(child_rect);
       }
       start -= child_len;
     }
     return bounds;
   }
 
   int end = start + len;
   int child_start = 0;
   int child_end = 0;
 
   gfx::Rect bounds;
-  for (size_t i = 0; i < children_.size() && child_end < start + len; ++i) {
-    BrowserAccessibility* child = children_[i];
-    DCHECK_EQ(child->role(), ui::AX_ROLE_INLINE_TEXT_BOX);
+  for (size_t i = 0; i < InternalChildCount() && child_end < start + len; ++i) {
+    BrowserAccessibility* child = InternalGetChild(i);
+    DCHECK_EQ(child->GetRole(), ui::AX_ROLE_INLINE_TEXT_BOX);
     std::string child_text;
     child->GetStringAttribute(ui::AX_ATTR_VALUE, &child_text);
     int child_len = static_cast<int>(child_text.size());
     child_start = child_end;
     child_end += child_len;
 
     if (child_end < start)
       continue;
 
     int overlap_start = std::max(start, child_start);
     int overlap_end = std::min(end, child_end);
 
     int local_start = overlap_start - child_start;
     int local_end = overlap_end - child_start;
 
-    gfx::Rect child_rect = child->location();
+    gfx::Rect child_rect = child->GetLocation();
     int text_direction = child->GetIntAttribute(
         ui::AX_ATTR_TEXT_DIRECTION);
     const std::vector<int32>& character_offsets = child->GetIntListAttribute(
         ui::AX_ATTR_CHARACTER_OFFSETS);
     int start_pixel_offset =
         local_start > 0 ? character_offsets[local_start - 1] : 0;
     int end_pixel_offset =
         local_end > 0 ? character_offsets[local_end - 1] : 0;
 
     gfx::Rect child_overlap_rect;
@@ skipping 60 matching lines @@
 
   // Walk the children recursively looking for the BrowserAccessibility that
   // most tightly encloses the specified point. Walk backwards so that in
   // the absence of any other information, we assume the object that occurs
   // later in the tree is on top of one that comes before it.
   for (int i = static_cast<int>(PlatformChildCount()) - 1; i >= 0; --i) {
     BrowserAccessibility* child = PlatformGetChild(i);
 
     // Skip table columns because cells are only contained in rows,
     // not columns.
-    if (child->role() == ui::AX_ROLE_COLUMN)
+    if (child->GetRole() == ui::AX_ROLE_COLUMN)
       continue;
 
     if (child->GetGlobalBoundsRect().Contains(point)) {
       BrowserAccessibility* result = child->BrowserAccessibilityForPoint(point);
       if (result == child && !child_result)
         child_result = result;
       if (result != child && !descendant_result)
         descendant_result = result;
     }
 
     if (child_result && descendant_result)
       break;
   }
 
   // Explanation of logic: it's possible that this point overlaps more than
   // one child of this object. If so, as a heuristic we prefer if the point
   // overlaps a descendant of one of the two children and not the other.
   // As an example, suppose you have two rows of buttons - the buttons don't
   // overlap, but the rows do. Without this heuristic, we'd greedily only
   // consider one of the containers.
   if (descendant_result)
     return descendant_result;
   if (child_result)
     return child_result;
 
   return this;
 }
 
 void BrowserAccessibility::Destroy() {
-  for (std::vector<BrowserAccessibility*>::iterator iter = children_.begin();
-       iter != children_.end();
-       ++iter) {
-    (*iter)->Destroy();
-  }
-  children_.clear();
+  for (uint32 i = 0; i < InternalChildCount(); i++)
+    InternalGetChild(i)->Destroy();
+  deprecated_children_.clear();
 
   // Allow the object to fire a TextRemoved notification.
   name_.clear();
   value_.clear();
   PostInitialize();
 
   manager_->NotifyAccessibilityEvent(ui::AX_EVENT_HIDE, this);
 
   instance_active_ = false;
   manager_->RemoveNode(this);
   NativeReleaseReference();
 }
 
 void BrowserAccessibility::NativeReleaseReference() {
   delete this;
 }
 
 bool BrowserAccessibility::HasBoolAttribute(
     ui::AXBoolAttribute attribute) const {
-  for (size_t i = 0; i < bool_attributes_.size(); ++i) {
-    if (bool_attributes_[i].first == attribute)
+  for (size_t i = 0; i < data_.bool_attributes.size(); ++i) {
+    if (data_.bool_attributes[i].first == attribute)
       return true;
   }
 
   return false;
 }
 
 
 bool BrowserAccessibility::GetBoolAttribute(
     ui::AXBoolAttribute attribute) const {
-  for (size_t i = 0; i < bool_attributes_.size(); ++i) {
-    if (bool_attributes_[i].first == attribute)
-      return bool_attributes_[i].second;
+  for (size_t i = 0; i < data_.bool_attributes.size(); ++i) {
+    if (data_.bool_attributes[i].first == attribute)
+      return data_.bool_attributes[i].second;
   }
 
   return false;
 }
 
 bool BrowserAccessibility::GetBoolAttribute(
     ui::AXBoolAttribute attribute, bool* value) const {
-  for (size_t i = 0; i < bool_attributes_.size(); ++i) {
-    if (bool_attributes_[i].first == attribute) {
-      *value = bool_attributes_[i].second;
+  for (size_t i = 0; i < data_.bool_attributes.size(); ++i) {
+    if (data_.bool_attributes[i].first == attribute) {
+      *value = data_.bool_attributes[i].second;
       return true;
     }
   }
 
   return false;
 }
 
 bool BrowserAccessibility::HasFloatAttribute(
     ui::AXFloatAttribute attribute) const {
-  for (size_t i = 0; i < float_attributes_.size(); ++i) {
-    if (float_attributes_[i].first == attribute)
+  for (size_t i = 0; i < data_.float_attributes.size(); ++i) {
+    if (data_.float_attributes[i].first == attribute)
       return true;
   }
 
   return false;
 }
 
 float BrowserAccessibility::GetFloatAttribute(
     ui::AXFloatAttribute attribute) const {
-  for (size_t i = 0; i < float_attributes_.size(); ++i) {
-    if (float_attributes_[i].first == attribute)
-      return float_attributes_[i].second;
+  for (size_t i = 0; i < data_.float_attributes.size(); ++i) {
+    if (data_.float_attributes[i].first == attribute)
+      return data_.float_attributes[i].second;
   }
 
   return 0.0;
 }
 
 bool BrowserAccessibility::GetFloatAttribute(
     ui::AXFloatAttribute attribute, float* value) const {
-  for (size_t i = 0; i < float_attributes_.size(); ++i) {
-    if (float_attributes_[i].first == attribute) {
-      *value = float_attributes_[i].second;
+  for (size_t i = 0; i < data_.float_attributes.size(); ++i) {
+    if (data_.float_attributes[i].first == attribute) {
+      *value = data_.float_attributes[i].second;
       return true;
     }
   }
 
   return false;
 }
 
 bool BrowserAccessibility::HasIntAttribute(
     ui::AXIntAttribute attribute) const {
-  for (size_t i = 0; i < int_attributes_.size(); ++i) {
-    if (int_attributes_[i].first == attribute)
+  for (size_t i = 0; i < data_.int_attributes.size(); ++i) {
+    if (data_.int_attributes[i].first == attribute)
       return true;
   }
 
   return false;
 }
 
 int BrowserAccessibility::GetIntAttribute(ui::AXIntAttribute attribute) const {
-  for (size_t i = 0; i < int_attributes_.size(); ++i) {
-    if (int_attributes_[i].first == attribute)
-      return int_attributes_[i].second;
+  for (size_t i = 0; i < data_.int_attributes.size(); ++i) {
+    if (data_.int_attributes[i].first == attribute)
+      return data_.int_attributes[i].second;
   }
 
   return 0;
 }
 
 bool BrowserAccessibility::GetIntAttribute(
     ui::AXIntAttribute attribute, int* value) const {
-  for (size_t i = 0; i < int_attributes_.size(); ++i) {
-    if (int_attributes_[i].first == attribute) {
-      *value = int_attributes_[i].second;
+  for (size_t i = 0; i < data_.int_attributes.size(); ++i) {
+    if (data_.int_attributes[i].first == attribute) {
+      *value = data_.int_attributes[i].second;
       return true;
     }
   }
 
   return false;
 }
 
 bool BrowserAccessibility::HasStringAttribute(
     ui::AXStringAttribute attribute) const {
-  for (size_t i = 0; i < string_attributes_.size(); ++i) {
-    if (string_attributes_[i].first == attribute)
+  for (size_t i = 0; i < data_.string_attributes.size(); ++i) {
+    if (data_.string_attributes[i].first == attribute)
       return true;
   }
 
   return false;
 }
 
 const std::string& BrowserAccessibility::GetStringAttribute(
     ui::AXStringAttribute attribute) const {
   CR_DEFINE_STATIC_LOCAL(std::string, empty_string, ());
-  for (size_t i = 0; i < string_attributes_.size(); ++i) {
-    if (string_attributes_[i].first == attribute)
-      return string_attributes_[i].second;
+  for (size_t i = 0; i < data_.string_attributes.size(); ++i) {
+    if (data_.string_attributes[i].first == attribute)
+      return data_.string_attributes[i].second;
   }
 
   return empty_string;
 }
 
 bool BrowserAccessibility::GetStringAttribute(
     ui::AXStringAttribute attribute, std::string* value) const {
-  for (size_t i = 0; i < string_attributes_.size(); ++i) {
-    if (string_attributes_[i].first == attribute) {
-      *value = string_attributes_[i].second;
+  for (size_t i = 0; i < data_.string_attributes.size(); ++i) {
+    if (data_.string_attributes[i].first == attribute) {
+      *value = data_.string_attributes[i].second;
       return true;
     }
   }
 
   return false;
 }
 
 base::string16 BrowserAccessibility::GetString16Attribute(
     ui::AXStringAttribute attribute) const {
   std::string value_utf8;
   if (!GetStringAttribute(attribute, &value_utf8))
     return base::string16();
   return base::UTF8ToUTF16(value_utf8);
 }
 
 bool BrowserAccessibility::GetString16Attribute(
     ui::AXStringAttribute attribute,
     base::string16* value) const {
   std::string value_utf8;
   if (!GetStringAttribute(attribute, &value_utf8))
     return false;
   *value = base::UTF8ToUTF16(value_utf8);
   return true;
 }
 
 void BrowserAccessibility::SetStringAttribute(
     ui::AXStringAttribute attribute, const std::string& value) {
-  for (size_t i = 0; i < string_attributes_.size(); ++i) {
-    if (string_attributes_[i].first == attribute) {
-      string_attributes_[i].second = value;
+  for (size_t i = 0; i < data_.string_attributes.size(); ++i) {
+    if (data_.string_attributes[i].first == attribute) {
+      data_.string_attributes[i].second = value;
       return;
     }
   }
   if (!value.empty())
-    string_attributes_.push_back(std::make_pair(attribute, value));
+    data_.string_attributes.push_back(std::make_pair(attribute, value));
 }
 
 bool BrowserAccessibility::HasIntListAttribute(
     ui::AXIntListAttribute attribute) const {
-  for (size_t i = 0; i < intlist_attributes_.size(); ++i) {
-    if (intlist_attributes_[i].first == attribute)
+  for (size_t i = 0; i < data_.intlist_attributes.size(); ++i) {
+    if (data_.intlist_attributes[i].first == attribute)
       return true;
   }
 
   return false;
 }
 
 const std::vector<int32>& BrowserAccessibility::GetIntListAttribute(
     ui::AXIntListAttribute attribute) const {
   CR_DEFINE_STATIC_LOCAL(std::vector<int32>, empty_vector, ());
-  for (size_t i = 0; i < intlist_attributes_.size(); ++i) {
-    if (intlist_attributes_[i].first == attribute)
-      return intlist_attributes_[i].second;
+  for (size_t i = 0; i < data_.intlist_attributes.size(); ++i) {
+    if (data_.intlist_attributes[i].first == attribute)
+      return data_.intlist_attributes[i].second;
   }
 
   return empty_vector;
 }
 
 bool BrowserAccessibility::GetIntListAttribute(
     ui::AXIntListAttribute attribute,
     std::vector<int32>* value) const {
-  for (size_t i = 0; i < intlist_attributes_.size(); ++i) {
-    if (intlist_attributes_[i].first == attribute) {
-      *value = intlist_attributes_[i].second;
+  for (size_t i = 0; i < data_.intlist_attributes.size(); ++i) {
+    if (data_.intlist_attributes[i].first == attribute) {
+      *value = data_.intlist_attributes[i].second;
       return true;
     }
   }
 
   return false;
 }
 
 bool BrowserAccessibility::GetHtmlAttribute(
     const char* html_attr, std::string* value) const {
-  for (size_t i = 0; i < html_attributes_.size(); ++i) {
-    const std::string& attr = html_attributes_[i].first;
+  for (size_t i = 0; i < GetHtmlAttributes().size(); ++i) {
+    const std::string& attr = GetHtmlAttributes()[i].first;
     if (LowerCaseEqualsASCII(attr, html_attr)) {
-      *value = html_attributes_[i].second;
+      *value = GetHtmlAttributes()[i].second;
       return true;
     }
   }
 
   return false;
 }
 
 bool BrowserAccessibility::GetHtmlAttribute(
     const char* html_attr, base::string16* value) const {
   std::string value_utf8;
@@ skipping 22 matching lines @@
   if (EqualsASCII(value, "true"))
     return true;
 
   if (EqualsASCII(value, "mixed"))
     *is_mixed = true;
 
   return false;  // Not set
 }
 
 bool BrowserAccessibility::HasState(ui::AXState state_enum) const {
-  return (state_ >> state_enum) & 1;
+  return (GetState() >> state_enum) & 1;
 }
 
 bool BrowserAccessibility::IsEditableText() const {
   // These roles don't have readonly set, but they're not editable text.
-  if (role_ == ui::AX_ROLE_SCROLL_AREA ||
-      role_ == ui::AX_ROLE_COLUMN ||
-      role_ == ui::AX_ROLE_TABLE_HEADER_CONTAINER) {
+  if (GetRole() == ui::AX_ROLE_SCROLL_AREA ||
+      GetRole() == ui::AX_ROLE_COLUMN ||
+      GetRole() == ui::AX_ROLE_TABLE_HEADER_CONTAINER) {
     return false;
   }
 
   // Note: WebAXStateReadonly being false means it's either a text control,
   // or contenteditable. We also check for editable text roles to cover
   // another element that has role=textbox set on it.
   return (!HasState(ui::AX_STATE_READ_ONLY) ||
-          role_ == ui::AX_ROLE_TEXT_FIELD ||
-          role_ == ui::AX_ROLE_TEXT_AREA);
+          GetRole() == ui::AX_ROLE_TEXT_FIELD ||
+          GetRole() == ui::AX_ROLE_TEXT_AREA);
 }
 
 std::string BrowserAccessibility::GetTextRecursive() const {
   if (!name_.empty()) {
     return name_;
   }
 
   std::string result;
   for (uint32 i = 0; i < PlatformChildCount(); ++i)
     result += PlatformGetChild(i)->GetTextRecursive();
   return result;
 }
 
 int BrowserAccessibility::GetStaticTextLenRecursive() const {
-  if (role_ == ui::AX_ROLE_STATIC_TEXT)
+  if (GetRole() == ui::AX_ROLE_STATIC_TEXT)
     return static_cast<int>(GetStringAttribute(ui::AX_ATTR_VALUE).size());
 
   int len = 0;
-  for (size_t i = 0; i < children_.size(); ++i)
-    len += children_[i]->GetStaticTextLenRecursive();
+  for (size_t i = 0; i < InternalChildCount(); ++i)
+    len += InternalGetChild(i)->GetStaticTextLenRecursive();
   return len;
 }
 
 }  // namespace content