Revert of Send Windows accessibility events based on tree updates.

content/browser/accessibility/browser_accessibility_win.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_win.h"
 
 #include <UIAutomationClient.h>
 #include <UIAutomationCoreApi.h>
 
 #include "base/strings/string_number_conversions.h"
@@ skipping 157 matching lines @@
   for (long i = 0; i < count; ++i) {
     HRESULT result = get_target(i, &targets[i]);
     if (result != S_OK)
       return result;
   }
 
   return S_OK;
 }
 
 //
-// BrowserAccessibilityWin::WinAttributes
-//
-
-BrowserAccessibilityWin::WinAttributes::WinAttributes()
-    : ia_role(0),
-      ia_state(0),
-      ia2_role(0),
-      ia2_state(0) {
-}
-
-//
 // BrowserAccessibilityWin
 //
 
 // static
 BrowserAccessibility* BrowserAccessibility::Create() {
   ui::win::CreateATLModuleIfNeeded();
   CComObject<BrowserAccessibilityWin>* instance;
   HRESULT hr = CComObject<BrowserAccessibilityWin>::CreateInstance(&instance);
   DCHECK(SUCCEEDED(hr));
   return instance->NewReference();
 }
 
 BrowserAccessibilityWin* BrowserAccessibility::ToBrowserAccessibilityWin() {
   return static_cast<BrowserAccessibilityWin*>(this);
 }
 
 BrowserAccessibilityWin::BrowserAccessibilityWin()
-    : win_attributes_(new WinAttributes()),
+    : ia_role_(0),
+      ia_state_(0),
+      ia2_role_(0),
+      ia2_state_(0),
+      first_time_(true),
+      old_ia_state_(0),
       previous_scroll_x_(0),
       previous_scroll_y_(0) {
   // Start unique IDs at -1 and decrement each time, because get_accChild
   // uses positive IDs to enumerate children, so we use negative IDs to
   // clearly distinguish between indices and unique IDs.
   unique_id_win_ = next_unique_id_win_;
   if (next_unique_id_win_ ==
           base::win::kLastBrowserAccessibilityManagerAccessibilityId) {
     next_unique_id_win_ =
         base::win::kFirstBrowserAccessibilityManagerAccessibilityId;
@@ skipping 179 matching lines @@
   if (!instance_active())
     return E_FAIL;
 
   if (!desc)
     return E_INVALIDARG;
 
   BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
   if (!target)
     return E_INVALIDARG;
 
-  base::string16 description_str = target->description();
-  if (description_str.empty())
-    return S_FALSE;
-
-  *desc = SysAllocString(description_str.c_str());
-
-  DCHECK(*desc);
-  return S_OK;
+  return target->GetStringAttributeAsBstr(
+      ui::AX_ATTR_DESCRIPTION, desc);
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accFocus(VARIANT* focus_child) {
   if (!instance_active())
     return E_FAIL;
 
   if (!focus_child)
     return E_INVALIDARG;
 
   BrowserAccessibilityWin* focus = static_cast<BrowserAccessibilityWin*>(
@@ skipping 15 matching lines @@
   if (!instance_active())
     return E_FAIL;
 
   if (!help)
     return E_INVALIDARG;
 
   BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
   if (!target)
     return E_INVALIDARG;
 
-  base::string16 help_str = target->help();
-  if (help_str.empty())
-    return S_FALSE;
-
-  *help = SysAllocString(help_str.c_str());
-
-  DCHECK(*help);
-  return S_OK;
+  return target->GetStringAttributeAsBstr(
+      ui::AX_ATTR_HELP, help);
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accKeyboardShortcut(VARIANT var_id,
                                                               BSTR* acc_key) {
   if (!instance_active())
     return E_FAIL;
 
   if (!acc_key)
     return E_INVALIDARG;
 
   BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
   if (!target)
     return E_INVALIDARG;
 
   return target->GetStringAttributeAsBstr(
       ui::AX_ATTR_SHORTCUT, acc_key);
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accName(VARIANT var_id, BSTR* name) {
   if (!instance_active())
     return E_FAIL;
 
   if (!name)
     return E_INVALIDARG;
 
   BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
   if (!target)
     return E_INVALIDARG;
 
-  base::string16 name_str = target->name();
+  std::string name_str = target->name();
 
   // If the name is empty, see if it's labeled by another element.
   if (name_str.empty()) {
     int title_elem_id;
     if (target->GetIntAttribute(ui::AX_ATTR_TITLE_UI_ELEMENT,
                                 &title_elem_id)) {
-      BrowserAccessibilityWin* title_elem =
-          manager()->GetFromID(title_elem_id)->ToBrowserAccessibilityWin();
+      BrowserAccessibility* title_elem =
+          manager()->GetFromID(title_elem_id);
       if (title_elem)
-        name_str = title_elem->GetNameRecursive();
+        name_str = title_elem->GetTextRecursive();
     }
   }
 
   if (name_str.empty())
     return S_FALSE;
 
-  *name = SysAllocString(name_str.c_str());
+  *name = SysAllocString(base::UTF8ToUTF16(name_str).c_str());
 
   DCHECK(*name);
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accParent(IDispatch** disp_parent) {
   if (!instance_active())
     return E_FAIL;
 
   if (!disp_parent)
@@ skipping 27 matching lines @@
   if (!instance_active())
     return E_FAIL;
 
   if (!role)
     return E_INVALIDARG;
 
   BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
   if (!target)
     return E_INVALIDARG;
 
-  if (!target->role_name().empty()) {
+  if (!target->role_name_.empty()) {
     role->vt = VT_BSTR;
-    role->bstrVal = SysAllocString(target->role_name().c_str());
+    role->bstrVal = SysAllocString(target->role_name_.c_str());
   } else {
     role->vt = VT_I4;
-    role->lVal = target->ia_role();
+    role->lVal = target->ia_role_;
   }
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accState(VARIANT var_id,
                                                    VARIANT* state) {
   if (!instance_active())
     return E_FAIL;
 
   if (!state)
     return E_INVALIDARG;
 
   BrowserAccessibilityWin* target = GetTargetFromChildID(var_id);
   if (!target)
     return E_INVALIDARG;
 
   state->vt = VT_I4;
-  state->lVal = target->ia_state();
+  state->lVal = target->ia_state_;
   if (manager()->GetFocus(NULL) == this)
     state->lVal |= STATE_SYSTEM_FOCUSED;
 
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accValue(VARIANT var_id,
                                                    BSTR* value) {
   if (!instance_active())
     return E_FAIL;
@@ skipping 24 matching lines @@
         ui::AX_ATTR_COLOR_VALUE_BLUE);
     base::string16 value_text;
     value_text = base::IntToString16((r * 100) / 255) + L"% red " +
                  base::IntToString16((g * 100) / 255) + L"% green " +
                  base::IntToString16((b * 100) / 255) + L"% blue";
     *value = SysAllocString(value_text.c_str());
     DCHECK(*value);
     return S_OK;
   }
 
-  *value = SysAllocString(target->value().c_str());
+  *value = SysAllocString(base::UTF8ToUTF16(target->value()).c_str());
   DCHECK(*value);
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_accHelpTopic(BSTR* help_file,
                                                        VARIANT var_id,
                                                        LONG* topic_id) {
   return E_NOTIMPL;
 }
 
@@ skipping 62 matching lines @@
 // IAccessible2 methods.
 //
 
 STDMETHODIMP BrowserAccessibilityWin::role(LONG* role) {
   if (!instance_active())
     return E_FAIL;
 
   if (!role)
     return E_INVALIDARG;
 
-  *role = ia2_role();
+  *role = ia2_role_;
 
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_attributes(BSTR* attributes) {
   if (!instance_active())
     return E_FAIL;
 
   if (!attributes)
     return E_INVALIDARG;
@@ skipping 14 matching lines @@
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_states(AccessibleStates* states) {
   if (!instance_active())
     return E_FAIL;
 
   if (!states)
     return E_INVALIDARG;
 
-  *states = ia2_state();
+  *states = ia2_state_;
 
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_uniqueID(LONG* unique_id) {
   if (!instance_active())
     return E_FAIL;
 
   if (!unique_id)
     return E_INVALIDARG;
@@ skipping 243 matching lines @@
 // IAccessibleImage methods.
 //
 
 STDMETHODIMP BrowserAccessibilityWin::get_description(BSTR* desc) {
   if (!instance_active())
     return E_FAIL;
 
   if (!desc)
     return E_INVALIDARG;
 
-  if (description().empty())
-    return S_FALSE;
-
-  *desc = SysAllocString(description().c_str());
-
-  DCHECK(*desc);
-  return S_OK;
+  return GetStringAttributeAsBstr(
+      ui::AX_ATTR_DESCRIPTION, desc);
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_imagePosition(
     enum IA2CoordinateType coordinate_type,
     LONG* x,
     LONG* y) {
   if (!instance_active())
     return E_FAIL;
 
   if (!x || !y)
@@ skipping 155 matching lines @@
     BrowserAccessibilityWin* cell = static_cast<BrowserAccessibilityWin*>(
         manager()->GetFromID(cell_id));
     if (cell && cell->GetRole() == ui::AX_ROLE_COLUMN_HEADER) {
       base::string16 cell_name = cell->GetString16Attribute(
           ui::AX_ATTR_NAME);
       if (cell_name.size() > 0) {
         *description = SysAllocString(cell_name.c_str());
         return S_OK;
       }
 
-      if (cell->description().size() > 0) {
-        *description = SysAllocString(cell->description().c_str());
-        return S_OK;
-      }
+      return cell->GetStringAttributeAsBstr(
+          ui::AX_ATTR_DESCRIPTION, description);
     }
   }
 
   return S_FALSE;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_columnExtentAt(
     long row,
     long column,
     long* n_columns_spanned) {
@@ skipping 165 matching lines @@
     BrowserAccessibilityWin* cell =
         manager()->GetFromID(cell_id)->ToBrowserAccessibilityWin();
     if (cell && cell->GetRole() == ui::AX_ROLE_ROW_HEADER) {
       base::string16 cell_name = cell->GetString16Attribute(
           ui::AX_ATTR_NAME);
       if (cell_name.size() > 0) {
         *description = SysAllocString(cell_name.c_str());
         return S_OK;
       }
 
-      if (cell->description().size() > 0) {
-        *description = SysAllocString(cell->description().c_str());
-        return S_OK;
-      }
+      return cell->GetStringAttributeAsBstr(
+          ui::AX_ATTR_DESCRIPTION, description);
     }
   }
 
   return S_FALSE;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_rowExtentAt(long row,
                                                       long column,
                                                       long* n_rows_spanned) {
   if (!instance_active())
@@ skipping 781 matching lines @@
   return get_text(*start_offset, *end_offset, text);
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_newText(IA2TextSegment* new_text) {
   if (!instance_active())
     return E_FAIL;
 
   if (!new_text)
     return E_INVALIDARG;
 
-  int start, old_len, new_len;
-  ComputeHypertextRemovedAndInserted(&start, &old_len, &new_len);
-  if (new_len == 0)
-    return E_FAIL;
+  base::string16 text = TextForIAccessibleText();
 
-  base::string16 substr = hypertext_.substr(start, new_len);
-  new_text->text = SysAllocString(substr.c_str());
-  new_text->start = static_cast<long>(start);
-  new_text->end = static_cast<long>(start + new_len);
+  new_text->text = SysAllocString(text.c_str());
+  new_text->start = 0;
+  new_text->end = static_cast<long>(text.size());
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_oldText(IA2TextSegment* old_text) {
   if (!instance_active())
     return E_FAIL;
 
   if (!old_text)
     return E_INVALIDARG;
 
-  int start, old_len, new_len;
-  ComputeHypertextRemovedAndInserted(&start, &old_len, &new_len);
-  if (old_len == 0)
-    return E_FAIL;
-
-  base::string16 substr = old_hypertext_.substr(start, old_len);
-  old_text->text = SysAllocString(substr.c_str());
-  old_text->start = static_cast<long>(start);
-  old_text->end = static_cast<long>(start + old_len);
+  old_text->text = SysAllocString(old_text_.c_str());
+  old_text->start = 0;
+  old_text->end = static_cast<long>(old_text_.size());
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_offsetAtPoint(
     LONG x,
     LONG y,
     enum IA2CoordinateType coord_type,
     LONG* offset) {
   if (!instance_active())
     return E_FAIL;
@@ skipping 113 matching lines @@
     long char_index,
     long* hyperlink_index) {
   if (!instance_active())
     return E_FAIL;
 
   if (!hyperlink_index)
     return E_INVALIDARG;
 
   *hyperlink_index = -1;
 
-  if (char_index < 0 ||
-      char_index >= static_cast<long>(hypertext_.size())) {
+  if (char_index < 0 || char_index >= static_cast<long>(hypertext_.size()))
     return E_INVALIDARG;
-  }
 
   std::map<int32, int32>::iterator it =
       hyperlink_offset_to_index_.find(char_index);
   if (it == hyperlink_offset_to_index_.end())
     return E_FAIL;
 
   *hyperlink_index = it->second;
   return S_OK;
 }
 
@@ skipping 128 matching lines @@
     return E_INVALIDARG;
   }
 
   base::string16 tag;
   if (GetString16Attribute(ui::AX_ATTR_HTML_TAG, &tag))
     *node_name = SysAllocString(tag.c_str());
   else
     *node_name = NULL;
 
   *name_space_id = 0;
-  *node_value = SysAllocString(value().c_str());
+  *node_value = SysAllocString(base::UTF8ToUTF16(value()).c_str());
   *num_children = PlatformChildCount();
   *unique_id = unique_id_win_;
 
-  if (ia_role() == ROLE_SYSTEM_DOCUMENT) {
+  if (ia_role_ == ROLE_SYSTEM_DOCUMENT) {
     *node_type = NODETYPE_DOCUMENT;
-  } else if (ia_role() == ROLE_SYSTEM_TEXT &&
-             ((ia2_state() & IA2_STATE_EDITABLE) == 0)) {
+  } else if (ia_role_ == ROLE_SYSTEM_TEXT &&
+             ((ia2_state_ & IA2_STATE_EDITABLE) == 0)) {
     *node_type = NODETYPE_TEXT;
   } else {
     *node_type = NODETYPE_ELEMENT;
   }
 
   return S_OK;
 }
 
 STDMETHODIMP BrowserAccessibilityWin::get_attributes(
     unsigned short max_attribs,
@@ skipping 390 matching lines @@
 //
 
 // static
 HRESULT WINAPI BrowserAccessibilityWin::InternalQueryInterface(
     void* this_ptr,
     const _ATL_INTMAP_ENTRY* entries,
     REFIID iid,
     void** object) {
   BrowserAccessibilityWin* accessibility =
       reinterpret_cast<BrowserAccessibilityWin*>(this_ptr);
-  int32 ia_role = accessibility->ia_role();
+  int32 ia_role = accessibility->ia_role_;
   if (iid == IID_IAccessibleImage) {
     if (ia_role != ROLE_SYSTEM_GRAPHIC) {
       *object = NULL;
       return E_NOINTERFACE;
     }
   } else if (iid == IID_IAccessibleTable || iid == IID_IAccessibleTable2) {
     if (ia_role != ROLE_SYSTEM_TABLE) {
       *object = NULL;
       return E_NOINTERFACE;
     }
@@ skipping 17 matching lines @@
   }
 
   return CComObjectRootBase::InternalQueryInterface(
       this_ptr, entries, iid, object);
 }
 
 //
 // Private methods.
 //
 
-// Called every time this node's data changes, while the tree update is
-// still in progress.
+// Called every time this node's data changes.
 void BrowserAccessibilityWin::OnDataChanged() {
   BrowserAccessibility::OnDataChanged();
-}
-
-// Called every time this node's data changes, after an atomic tree update.
-void BrowserAccessibilityWin::OnUpdateFinished() {
-  BrowserAccessibility::OnUpdateFinished();
-
-  if (PlatformIsChildOfLeaf())
-    return;
-
-  bool is_new_object = ia_role() == 0 && role_name().empty();
-
-  old_win_attributes_.swap(win_attributes_);
-  win_attributes_.reset(new WinAttributes());
 
   InitRoleAndState();
 
-  win_attributes_->ia2_attributes.clear();
-
   // Expose autocomplete attribute for combobox and textbox.
   StringAttributeToIA2(ui::AX_ATTR_AUTO_COMPLETE, "autocomplete");
 
   // Expose the "display" and "tag" attributes.
   StringAttributeToIA2(ui::AX_ATTR_DISPLAY, "display");
   StringAttributeToIA2(ui::AX_ATTR_TEXT_INPUT_TYPE, "text-input-type");
   StringAttributeToIA2(ui::AX_ATTR_HTML_TAG, "tag");
   StringAttributeToIA2(ui::AX_ATTR_ROLE, "xml-roles");
 
   // Expose "level" attribute for headings, trees, etc.
   IntAttributeToIA2(ui::AX_ATTR_HIERARCHICAL_LEVEL, "level");
 
   // Expose the set size and position in set for listbox options.
   if (GetRole() == ui::AX_ROLE_LIST_BOX_OPTION &&
       GetParent() &&
       GetParent()->GetRole() == ui::AX_ROLE_LIST_BOX) {
-    win_attributes_->ia2_attributes.push_back(
+    ia2_attributes_.push_back(
         L"setsize:" + base::IntToString16(GetParent()->PlatformChildCount()));
-    win_attributes_->ia2_attributes.push_back(
+    ia2_attributes_.push_back(
         L"setsize:" + base::IntToString16(GetIndexInParent() + 1));
   }
 
-  if (ia_role() == ROLE_SYSTEM_CHECKBUTTON ||
-      ia_role() == ROLE_SYSTEM_RADIOBUTTON ||
-      ia2_role() == IA2_ROLE_CHECK_MENU_ITEM ||
-      ia2_role() == IA2_ROLE_RADIO_MENU_ITEM ||
-      ia2_role() == IA2_ROLE_TOGGLE_BUTTON) {
-    win_attributes_->ia2_attributes.push_back(L"checkable:true");
+  if (ia_role_ == ROLE_SYSTEM_CHECKBUTTON ||
+      ia_role_ == ROLE_SYSTEM_RADIOBUTTON ||
+      ia2_role_ == IA2_ROLE_CHECK_MENU_ITEM ||
+      ia2_role_ == IA2_ROLE_RADIO_MENU_ITEM ||
+      ia2_role_ == IA2_ROLE_TOGGLE_BUTTON) {
+    ia2_attributes_.push_back(L"checkable:true");
   }
 
   // Expose live region attributes.
   StringAttributeToIA2(ui::AX_ATTR_LIVE_STATUS, "live");
   StringAttributeToIA2(ui::AX_ATTR_LIVE_RELEVANT, "relevant");
   BoolAttributeToIA2(ui::AX_ATTR_LIVE_ATOMIC, "atomic");
   BoolAttributeToIA2(ui::AX_ATTR_LIVE_BUSY, "busy");
 
   // Expose container live region attributes.
   StringAttributeToIA2(ui::AX_ATTR_CONTAINER_LIVE_STATUS,
                        "container-live");
   StringAttributeToIA2(ui::AX_ATTR_CONTAINER_LIVE_RELEVANT,
                        "container-relevant");
   BoolAttributeToIA2(ui::AX_ATTR_CONTAINER_LIVE_ATOMIC,
                      "container-atomic");
   BoolAttributeToIA2(ui::AX_ATTR_CONTAINER_LIVE_BUSY,
                      "container-busy");
 
+  // Expose slider value.
+  if (ia_role_ == ROLE_SYSTEM_PROGRESSBAR ||
+      ia_role_ == ROLE_SYSTEM_SCROLLBAR ||
+      ia_role_ == ROLE_SYSTEM_SLIDER) {
+    ia2_attributes_.push_back(L"valuetext:" + GetValueText());
+  }
+
   // Expose table cell index.
   if (IsCellOrTableHeaderRole()) {
     BrowserAccessibility* table = GetParent();
     while (table && table->GetRole() != ui::AX_ROLE_TABLE)
       table = table->GetParent();
     if (table) {
       const std::vector<int32>& unique_cell_ids = table->GetIntListAttribute(
           ui::AX_ATTR_UNIQUE_CELL_IDS);
       for (size_t i = 0; i < unique_cell_ids.size(); ++i) {
         if (unique_cell_ids[i] == GetId()) {
-          win_attributes_->ia2_attributes.push_back(
+          ia2_attributes_.push_back(
               base::string16(L"table-cell-index:") + base::IntToString16(i));
         }
       }
     }
   }
 
   // Expose invalid state for form controls and elements with aria-invalid.
   int invalid_state;
   if (GetIntAttribute(ui::AX_ATTR_INVALID_STATE, &invalid_state)) {
     // TODO(nektar): Handle the possibility of having multiple aria-invalid
     // attributes defined, e.g., "invalid:spelling,grammar".
     switch (invalid_state) {
       case ui::AX_INVALID_STATE_NONE:
         break;
       case ui::AX_INVALID_STATE_FALSE:
-        win_attributes_->ia2_attributes.push_back(L"invalid:false");
+        ia2_attributes_.push_back(L"invalid:false");
         break;
       case ui::AX_INVALID_STATE_TRUE:
-        win_attributes_->ia2_attributes.push_back(L"invalid:true");
+        ia2_attributes_.push_back(L"invalid:true");
         break;
       case ui::AX_INVALID_STATE_SPELLING:
-        win_attributes_->ia2_attributes.push_back(L"invalid:spelling");
+        ia2_attributes_.push_back(L"invalid:spelling");
         break;
       case ui::AX_INVALID_STATE_GRAMMAR:
-        win_attributes_->ia2_attributes.push_back(L"invalid:grammar");
+        ia2_attributes_.push_back(L"invalid:grammar");
         break;
       case ui::AX_INVALID_STATE_OTHER:
         {
           base::string16 aria_invalid_value;
           if (GetString16Attribute(ui::AX_ATTR_ARIA_INVALID_VALUE,
                                    &aria_invalid_value)) {
-            win_attributes_->ia2_attributes.push_back(
-                L"invalid:" + aria_invalid_value);
+            ia2_attributes_.push_back(L"invalid:" + aria_invalid_value);
           } else {
             // Set the attribute to L"true", since we cannot be more specific.
-            win_attributes_->ia2_attributes.push_back(L"invalid:true");
+            ia2_attributes_.push_back(L"invalid:true");
           }
         }
         break;
       default:
         NOTREACHED();
     }
   }
 
   // The calculation of the accessible name of an element has been
   // standardized in the HTML to Platform Accessibility APIs Implementation
   // Guide (http://www.w3.org/TR/html-aapi/). In order to return the
   // appropriate accessible name on Windows, we need to apply some logic
   // to the fields we get from WebKit.
   //
   // TODO(dmazzoni): move most of this logic into WebKit.
   //
   // WebKit gives us:
   //
   //   name: the default name, e.g. inner text
   //   title ui element: a reference to a <label> element on the same
   //       page that labels this node.
   //   description: accessible labels that override the default name:
   //       aria-label or aria-labelledby or aria-describedby
   //   help: the value of the "title" attribute
   //
   // On Windows, the logic we apply lets some fields take precedence and
   // always returns the primary name in "name" and the secondary name,
   // if any, in "description".
 
-  int title_elem_id = GetIntAttribute(ui::AX_ATTR_TITLE_UI_ELEMENT);
-  base::string16 name = GetString16Attribute(ui::AX_ATTR_NAME);
-  base::string16 description = GetString16Attribute(ui::AX_ATTR_DESCRIPTION);
-  base::string16 help = GetString16Attribute(ui::AX_ATTR_HELP);
-  base::string16 value = GetString16Attribute(ui::AX_ATTR_VALUE);
+  int title_elem_id = GetIntAttribute(
+      ui::AX_ATTR_TITLE_UI_ELEMENT);
+  std::string help = GetStringAttribute(ui::AX_ATTR_HELP);
+  std::string description = GetStringAttribute(
+      ui::AX_ATTR_DESCRIPTION);
 
   // WebKit annoyingly puts the title in the description if there's no other
   // description, which just confuses the rest of the logic. Put it back.
   // Now "help" is always the value of the "title" attribute, if present.
-  base::string16 title_attr;
+  std::string title_attr;
   if (GetHtmlAttribute("title", &title_attr) &&
       description == title_attr &&
       help.empty()) {
     help = description;
     description.clear();
   }
 
   // Now implement the main logic: the descripion should become the name if
   // it's nonempty, and the help should become the description if
   // there's no description - or the name if there's no name or description.
   if (!description.empty()) {
-    name = description;
+    set_name(description);
     description.clear();
   }
   if (!help.empty() && description.empty()) {
     description = help;
     help.clear();
   }
-  if (!description.empty() && name.empty() && !title_elem_id) {
-    name = description;
+  if (!description.empty() && name().empty() && !title_elem_id) {
+    set_name(description);
     description.clear();
   }
 
   // If it's a text field, also consider the placeholder.
-  base::string16 placeholder;
+  std::string placeholder;
   if (GetRole() == ui::AX_ROLE_TEXT_FIELD &&
       HasState(ui::AX_STATE_FOCUSABLE) &&
       GetHtmlAttribute("placeholder", &placeholder)) {
-    if (name.empty() && !title_elem_id) {
-      name = placeholder;
+    if (name().empty() && !title_elem_id) {
+      set_name(placeholder);
     } else if (description.empty()) {
       description = placeholder;
     }
   }
 
+  SetStringAttribute(ui::AX_ATTR_DESCRIPTION, description);
+  SetStringAttribute(ui::AX_ATTR_HELP, help);
+
   // On Windows, the value of a document should be its url.
   if (GetRole() == ui::AX_ROLE_ROOT_WEB_AREA ||
       GetRole() == ui::AX_ROLE_WEB_AREA) {
-    value = GetString16Attribute(ui::AX_ATTR_DOC_URL);
+    set_value(GetStringAttribute(ui::AX_ATTR_DOC_URL));
   }
 
   // For certain roles (listbox option, static text, and list marker)
   // WebKit stores the main accessible text in the "value" - swap it so
   // that it's the "name".
-  if (name.empty() &&
+  if (name().empty() &&
       (GetRole() == ui::AX_ROLE_LIST_BOX_OPTION ||
        GetRole() == ui::AX_ROLE_STATIC_TEXT ||
        GetRole() == ui::AX_ROLE_LIST_MARKER)) {
-    base::string16 tmp = value;
-    value = name;
-    name = tmp;
+    std::string tmp = value();
+    set_value(name());
+    set_name(tmp);
   }
 
   // If this doesn't have a value and is linked then set its value to the url
   // attribute. This allows screen readers to read an empty link's destination.
-  if (value.empty() && (ia_state() & STATE_SYSTEM_LINKED))
-    value = GetString16Attribute(ui::AX_ATTR_URL);
-
-  win_attributes_->name = name;
-  win_attributes_->description = description;
-  win_attributes_->help = help;
-  win_attributes_->value = value;
+  if (value().empty() && (ia_state_ & STATE_SYSTEM_LINKED))
+    set_value(GetStringAttribute(ui::AX_ATTR_URL));
 
   // Clear any old relationships between this node and other nodes.
   for (size_t i = 0; i < relations_.size(); ++i)
     relations_[i]->Release();
   relations_.clear();
 
   // Handle title UI element.
   if (title_elem_id) {
     // Add a labelled by relationship.
     CComObject<BrowserAccessibilityRelation>* relation;
     HRESULT hr = CComObject<BrowserAccessibilityRelation>::CreateInstance(
         &relation);
     DCHECK(SUCCEEDED(hr));
     relation->AddRef();
     relation->Initialize(this, IA2_RELATION_LABELLED_BY);
     relation->AddTarget(title_elem_id);
     relations_.push_back(relation);
   }
 
-  // Expose slider value.
-  if (ia_role() == ROLE_SYSTEM_PROGRESSBAR ||
-      ia_role() == ROLE_SYSTEM_SCROLLBAR ||
-      ia_role() == ROLE_SYSTEM_SLIDER) {
-    win_attributes_->ia2_attributes.push_back(L"valuetext:" + GetValueText());
-  }
-
   // If this is a web area for a presentational iframe, give it a role of
   // something other than DOCUMENT so that the fact that it's a separate doc
   // is not exposed to AT.
   if (IsWebAreaForPresentationalIframe()) {
-    win_attributes_->ia_role = ROLE_SYSTEM_GROUPING;
-    win_attributes_->ia2_role = ROLE_SYSTEM_GROUPING;
+    ia_role_ = ROLE_SYSTEM_GROUPING;
+    ia2_role_ = ROLE_SYSTEM_GROUPING;
   }
-
-  BrowserAccessibilityManagerWin* manager =
-      this->manager()->ToBrowserAccessibilityManagerWin();
-
-  // Fire an event when an alert first appears.
-  if (ia_role() == ROLE_SYSTEM_ALERT &&
-      old_win_attributes_->ia_role != ROLE_SYSTEM_ALERT) {
-    manager->NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, this);
-  }
-
-  // Fire an event if the name, description, help, or value changes.
-  if (!is_new_object) {
-    if (name != old_win_attributes_->name)
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_NAMECHANGE, this);
-    if (description != old_win_attributes_->description)
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_DESCRIPTIONCHANGE, this);
-    if (help != old_win_attributes_->help)
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_HELPCHANGE, this);
-    if (value != old_win_attributes_->value)
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_VALUECHANGE, this);
-    if (ia_state() != old_win_attributes_->ia_state)
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_STATECHANGE, this);
-
-    // Normally focus events are handled elsewhere, however
-    // focus for managed descendants is platform-specific.
-    // Fire a focus event if the focused descendant in a multi-select
-    // list box changes.
-    if (GetRole() == ui::AX_ROLE_LIST_BOX_OPTION &&
-        (ia_state() & STATE_SYSTEM_FOCUSABLE) &&
-        (ia_state() & STATE_SYSTEM_SELECTABLE) &&
-        (ia_state() & STATE_SYSTEM_FOCUSED) &&
-        !(old_win_attributes_->ia_state & STATE_SYSTEM_FOCUSED)) {
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_FOCUS, this);
-    }
-
-    // Handle selection being added or removed.
-    bool is_selected_now = (ia_state() & STATE_SYSTEM_SELECTED) != 0;
-    bool was_selected_before =
-        (old_win_attributes_->ia_state & STATE_SYSTEM_SELECTED) != 0;
-    if (is_selected_now && !was_selected_before) {
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_SELECTIONADD, this);
-    } else if (!is_selected_now && was_selected_before) {
-      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_SELECTIONREMOVE, this);
-    }
-
-    // Fire an event if this container object has scrolled.
-    int sx = 0;
-    int sy = 0;
-    if (GetIntAttribute(ui::AX_ATTR_SCROLL_X, &sx) &&
-        GetIntAttribute(ui::AX_ATTR_SCROLL_Y, &sy)) {
-      if (sx != previous_scroll_x_ || sy != previous_scroll_y_)
-        manager->MaybeCallNotifyWinEvent(EVENT_SYSTEM_SCROLLINGEND, this);
-      previous_scroll_x_ = sx;
-      previous_scroll_y_ = sy;
-    }
-
-    // Changing a static text node can affect the IAccessibleText hypertext
-    // of the parent node, so force it to be recomputed here.
-    if (GetParent() &&
-        GetRole() == ui::AX_ROLE_STATIC_TEXT &&
-        name != old_win_attributes_->name) {
-      GetParent()->ToBrowserAccessibilityWin()->UpdateIAccessibleText();
-    }
-  }
-
-  old_win_attributes_.reset(nullptr);
 }
 
-void BrowserAccessibilityWin::UpdateIAccessibleText() {
-  old_hypertext_ = hypertext_;
-  hypertext_.clear();
-
+void BrowserAccessibilityWin::OnUpdateFinished() {
   // Construct the hypertext for this node.
   hyperlink_offset_to_index_.clear();
   hyperlinks_.clear();
+  hypertext_.clear();
   for (unsigned int i = 0; i < PlatformChildCount(); ++i) {
-    BrowserAccessibilityWin* child =
-        PlatformGetChild(i)->ToBrowserAccessibilityWin();
+    BrowserAccessibility* child = PlatformGetChild(i);
     if (child->GetRole() == ui::AX_ROLE_STATIC_TEXT) {
-      hypertext_ += child->name();
+      hypertext_ += base::UTF8ToUTF16(child->name());
     } else {
-      hyperlink_offset_to_index_[hypertext_.size()] =
-          hyperlinks_.size();
+      hyperlink_offset_to_index_[hypertext_.size()] = hyperlinks_.size();
       hypertext_ += kEmbeddedCharacter;
       hyperlinks_.push_back(i);
     }
   }
   DCHECK_EQ(hyperlink_offset_to_index_.size(), hyperlinks_.size());
 
-  if (hypertext_ != old_hypertext_) {
-    BrowserAccessibilityManagerWin* manager =
-        this->manager()->ToBrowserAccessibilityManagerWin();
+  // Fire an event when an alert first appears.
+  if (GetRole() == ui::AX_ROLE_ALERT && first_time_)
+    manager()->NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, this);
 
-    int start, old_len, new_len;
-    ComputeHypertextRemovedAndInserted(&start, &old_len, &new_len);
-    if (old_len) {
-      // In-process screen readers may call IAccessibleText::get_oldText
-      // to retrieve the text that was removed.
-      manager->MaybeCallNotifyWinEvent(IA2_EVENT_TEXT_REMOVED, this);
+  // Fire events if text has changed.
+  base::string16 text = TextForIAccessibleText();
+  if (previous_text_ != text) {
+    if (!previous_text_.empty() && !text.empty()) {
+      manager()->NotifyAccessibilityEvent(
+          ui::AX_EVENT_SHOW, this);
     }
-    if (new_len) {
-      // In-process screen readers may call IAccessibleText::get_newText
-      // to retrieve the text that was inserted.
-      manager->MaybeCallNotifyWinEvent(IA2_EVENT_TEXT_INSERTED, this);
-    }
+
+    // TODO(dmazzoni): Look into HIDE events, too.
+
+    old_text_ = previous_text_;
+    previous_text_ = text;
   }
 
-  old_hypertext_.clear();
-}
+  BrowserAccessibilityManagerWin* manager =
+      this->manager()->ToBrowserAccessibilityManagerWin();
 
-void BrowserAccessibilityWin::OnSubtreeWillBeDeleted() {
-  manager()->ToBrowserAccessibilityManagerWin()->MaybeCallNotifyWinEvent(
-      EVENT_OBJECT_HIDE, this);
-}
+  // Fire events if the state has changed.
+  if (!first_time_ && ia_state_ != old_ia_state_) {
+    // Normally focus events are handled elsewhere, however
+    // focus for managed descendants is platform-specific.
+    // Fire a focus event if the focused descendant in a multi-select
+    // list box changes.
+    if (GetRole() == ui::AX_ROLE_LIST_BOX_OPTION &&
+        (ia_state_ & STATE_SYSTEM_FOCUSABLE) &&
+        (ia_state_ & STATE_SYSTEM_SELECTABLE) &&
+        (ia_state_ & STATE_SYSTEM_FOCUSED) &&
+        !(old_ia_state_ & STATE_SYSTEM_FOCUSED)) {
+      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_FOCUS, unique_id_win());
+    }
 
-void BrowserAccessibilityWin::OnSubtreeCreationFinished() {
-  manager()->ToBrowserAccessibilityManagerWin()->MaybeCallNotifyWinEvent(
-      EVENT_OBJECT_SHOW, this);
+    if ((ia_state_ & STATE_SYSTEM_SELECTED) &&
+        !(old_ia_state_ & STATE_SYSTEM_SELECTED)) {
+      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_SELECTIONADD,
+                                       unique_id_win());
+    } else if (!(ia_state_ & STATE_SYSTEM_SELECTED) &&
+               (old_ia_state_ & STATE_SYSTEM_SELECTED)) {
+      manager->MaybeCallNotifyWinEvent(EVENT_OBJECT_SELECTIONREMOVE,
+                                       unique_id_win());
+    }
+
+    old_ia_state_ = ia_state_;
+  }
+
+  // Fire an event if this container object has scrolled.
+  int sx = 0;
+  int sy = 0;
+  if (GetIntAttribute(ui::AX_ATTR_SCROLL_X, &sx) &&
+      GetIntAttribute(ui::AX_ATTR_SCROLL_Y, &sy)) {
+    if (!first_time_ &&
+        (sx != previous_scroll_x_ || sy != previous_scroll_y_)) {
+      manager->MaybeCallNotifyWinEvent(EVENT_SYSTEM_SCROLLINGEND,
+                                       unique_id_win());
+    }
+    previous_scroll_x_ = sx;
+    previous_scroll_y_ = sy;
+  }
+
+  first_time_ = false;
 }
 
 void BrowserAccessibilityWin::NativeAddReference() {
   AddRef();
 }
 
 void BrowserAccessibilityWin::NativeReleaseReference() {
   Release();
 }
 
 bool BrowserAccessibilityWin::IsNative() const {
   return true;
 }
 
 void BrowserAccessibilityWin::OnLocationChanged() {
   manager()->ToBrowserAccessibilityManagerWin()->MaybeCallNotifyWinEvent(
-      EVENT_OBJECT_LOCATIONCHANGE, this);
+      EVENT_OBJECT_LOCATIONCHANGE, unique_id_win());
 }
 
 BrowserAccessibilityWin* BrowserAccessibilityWin::NewReference() {
   AddRef();
   return this;
 }
 
 BrowserAccessibilityWin* BrowserAccessibilityWin::GetTargetFromChildID(
     const VARIANT& var_id) {
   if (var_id.vt != VT_I4)
@@ skipping 24 matching lines @@
   *value_bstr = SysAllocString(str.c_str());
   DCHECK(*value_bstr);
 
   return S_OK;
 }
 
 void BrowserAccessibilityWin::StringAttributeToIA2(
     ui::AXStringAttribute attribute,
     const char* ia2_attr) {
   base::string16 value;
-  if (GetString16Attribute(attribute, &value)) {
-    win_attributes_->ia2_attributes.push_back(
-        base::ASCIIToUTF16(ia2_attr) + L":" + value);
-  }
+  if (GetString16Attribute(attribute, &value))
+    ia2_attributes_.push_back(base::ASCIIToUTF16(ia2_attr) + L":" + value);
 }
 
 void BrowserAccessibilityWin::BoolAttributeToIA2(
     ui::AXBoolAttribute attribute,
     const char* ia2_attr) {
   bool value;
   if (GetBoolAttribute(attribute, &value)) {
-    win_attributes_->ia2_attributes.push_back(
-        (base::ASCIIToUTF16(ia2_attr) + L":") +
-        (value ? L"true" : L"false"));
+    ia2_attributes_.push_back((base::ASCIIToUTF16(ia2_attr) + L":") +
+                              (value ? L"true" : L"false"));
   }
 }
 
 void BrowserAccessibilityWin::IntAttributeToIA2(
     ui::AXIntAttribute attribute,
     const char* ia2_attr) {
   int value;
   if (GetIntAttribute(attribute, &value)) {
-    win_attributes_->ia2_attributes.push_back(
-        base::ASCIIToUTF16(ia2_attr) + L":" +
-        base::IntToString16(value));
+    ia2_attributes_.push_back(base::ASCIIToUTF16(ia2_attr) + L":" +
+                              base::IntToString16(value));
   }
 }
 
-base::string16 BrowserAccessibilityWin::GetNameRecursive() const {
-  if (!name().empty()) {
-    return name();
-  }
-
-  base::string16 result;
-  for (uint32 i = 0; i < PlatformChildCount(); ++i) {
-    result += PlatformGetChild(i)->ToBrowserAccessibilityWin()->
-        GetNameRecursive();
-  }
-  return result;
-}
-
 base::string16 BrowserAccessibilityWin::GetValueText() {
   float fval;
-  base::string16 value = this->value();
+  base::string16 value = base::UTF8ToUTF16(this->value());
 
   if (value.empty() &&
       GetFloatAttribute(ui::AX_ATTR_VALUE_FOR_RANGE, &fval)) {
     value = base::UTF8ToUTF16(base::DoubleToString(fval));
   }
   return value;
 }
 
 base::string16 BrowserAccessibilityWin::TextForIAccessibleText() {
   if (IsEditableText())
-    return value();
-  return (GetRole() == ui::AX_ROLE_STATIC_TEXT) ? name() : hypertext_;
-}
-
-void BrowserAccessibilityWin::ComputeHypertextRemovedAndInserted(
-    int* start, int* old_len, int* new_len) {
-  *start = 0;
-  *old_len = 0;
-  *new_len = 0;
-
-  const base::string16& old_text = old_hypertext_;
-  const base::string16& new_text = hypertext_;
-
-  size_t common_prefix = 0;
-  while (common_prefix < old_text.size() &&
-         common_prefix < new_text.size() &&
-         old_text[common_prefix] == new_text[common_prefix]) {
-    ++common_prefix;
-  }
-
-  size_t common_suffix = 0;
-  while (common_prefix + common_suffix < old_text.size() &&
-         common_prefix + common_suffix < new_text.size() &&
-         old_text[old_text.size() - common_suffix - 1] ==
-         new_text[new_text.size() - common_suffix - 1]) {
-    ++common_suffix;
-  }
-
-  *start = common_prefix;
-  *old_len = old_text.size() - common_prefix - common_suffix;
-  *new_len = new_text.size() - common_prefix - common_suffix;
+    return base::UTF8ToUTF16(value());
+  return (GetRole() == ui::AX_ROLE_STATIC_TEXT) ?
+      base::UTF8ToUTF16(name()) : hypertext_;
 }
 
 void BrowserAccessibilityWin::HandleSpecialTextOffset(
     const base::string16& text,
     LONG* offset) {
   if (*offset == IA2_TEXT_OFFSET_LENGTH)
     *offset = static_cast<LONG>(text.size());
   else if (*offset == IA2_TEXT_OFFSET_CARET)
     get_caretOffset(offset);
 }
@@ skipping 30 matching lines @@
       ui::AX_ATTR_LINE_BREAKS);
   return ui::FindAccessibleTextBoundary(
       text, line_breaks, boundary, start_offset, direction);
 }
 
 BrowserAccessibilityWin* BrowserAccessibilityWin::GetFromID(int32 id) {
   return manager()->GetFromID(id)->ToBrowserAccessibilityWin();
 }
 
 void BrowserAccessibilityWin::InitRoleAndState() {
-  int32 ia_role = 0;
-  int32 ia_state = 0;
-  base::string16 role_name;
-  int32 ia2_role = 0;
-  int32 ia2_state = IA2_STATE_OPAQUE;
+  ia_state_ = 0;
+  ia2_state_ = IA2_STATE_OPAQUE;
+  ia2_attributes_.clear();
 
   if (HasState(ui::AX_STATE_BUSY))
-    ia_state |= STATE_SYSTEM_BUSY;
+    ia_state_ |= STATE_SYSTEM_BUSY;
   if (HasState(ui::AX_STATE_CHECKED))
-    ia_state |= STATE_SYSTEM_CHECKED;
+    ia_state_ |= STATE_SYSTEM_CHECKED;
   if (HasState(ui::AX_STATE_COLLAPSED))
-    ia_state |= STATE_SYSTEM_COLLAPSED;
+    ia_state_ |= STATE_SYSTEM_COLLAPSED;
   if (HasState(ui::AX_STATE_EXPANDED))
-    ia_state |= STATE_SYSTEM_EXPANDED;
+    ia_state_ |= STATE_SYSTEM_EXPANDED;
   if (HasState(ui::AX_STATE_FOCUSABLE))
-    ia_state |= STATE_SYSTEM_FOCUSABLE;
+    ia_state_ |= STATE_SYSTEM_FOCUSABLE;
   if (HasState(ui::AX_STATE_HASPOPUP))
-    ia_state |= STATE_SYSTEM_HASPOPUP;
+    ia_state_ |= STATE_SYSTEM_HASPOPUP;
   if (HasState(ui::AX_STATE_HOVERED))
-    ia_state |= STATE_SYSTEM_HOTTRACKED;
+    ia_state_ |= STATE_SYSTEM_HOTTRACKED;
   if (HasState(ui::AX_STATE_INDETERMINATE))
-    ia_state |= STATE_SYSTEM_INDETERMINATE;
+    ia_state_ |= STATE_SYSTEM_INDETERMINATE;
   if (HasIntAttribute(ui::AX_ATTR_INVALID_STATE) &&
       GetIntAttribute(ui::AX_ATTR_INVALID_STATE) != ui::AX_INVALID_STATE_FALSE)
-    ia2_state |= IA2_STATE_INVALID_ENTRY;
+    ia2_state_ |= IA2_STATE_INVALID_ENTRY;
   if (HasState(ui::AX_STATE_INVISIBLE))
-    ia_state |= STATE_SYSTEM_INVISIBLE;
+    ia_state_ |= STATE_SYSTEM_INVISIBLE;
   if (HasState(ui::AX_STATE_LINKED))
-    ia_state |= STATE_SYSTEM_LINKED;
+    ia_state_ |= STATE_SYSTEM_LINKED;
   if (HasState(ui::AX_STATE_MULTISELECTABLE)) {
-    ia_state |= STATE_SYSTEM_EXTSELECTABLE;
-    ia_state |= STATE_SYSTEM_MULTISELECTABLE;
+    ia_state_ |= STATE_SYSTEM_EXTSELECTABLE;
+    ia_state_ |= STATE_SYSTEM_MULTISELECTABLE;
   }
   // TODO(ctguil): Support STATE_SYSTEM_EXTSELECTABLE/accSelect.
   if (HasState(ui::AX_STATE_OFFSCREEN))
-    ia_state |= STATE_SYSTEM_OFFSCREEN;
+    ia_state_ |= STATE_SYSTEM_OFFSCREEN;
   if (HasState(ui::AX_STATE_PRESSED))
-    ia_state |= STATE_SYSTEM_PRESSED;
+    ia_state_ |= STATE_SYSTEM_PRESSED;
   if (HasState(ui::AX_STATE_PROTECTED))
-    ia_state |= STATE_SYSTEM_PROTECTED;
+    ia_state_ |= STATE_SYSTEM_PROTECTED;
   if (HasState(ui::AX_STATE_REQUIRED))
-    ia2_state |= IA2_STATE_REQUIRED;
+    ia2_state_ |= IA2_STATE_REQUIRED;
   if (HasState(ui::AX_STATE_SELECTABLE))
-    ia_state |= STATE_SYSTEM_SELECTABLE;
+    ia_state_ |= STATE_SYSTEM_SELECTABLE;
   if (HasState(ui::AX_STATE_SELECTED))
-    ia_state |= STATE_SYSTEM_SELECTED;
+    ia_state_ |= STATE_SYSTEM_SELECTED;
   if (HasState(ui::AX_STATE_VISITED))
-    ia_state |= STATE_SYSTEM_TRAVERSED;
+    ia_state_ |= STATE_SYSTEM_TRAVERSED;
   if (!HasState(ui::AX_STATE_ENABLED))
-    ia_state |= STATE_SYSTEM_UNAVAILABLE;
+    ia_state_ |= STATE_SYSTEM_UNAVAILABLE;
   if (HasState(ui::AX_STATE_VERTICAL))
-    ia2_state |= IA2_STATE_VERTICAL;
+    ia2_state_ |= IA2_STATE_VERTICAL;
   if (HasState(ui::AX_STATE_HORIZONTAL))
-    ia2_state |= IA2_STATE_HORIZONTAL;
+    ia2_state_ |= IA2_STATE_HORIZONTAL;
   if (HasState(ui::AX_STATE_VISITED))
-    ia_state |= STATE_SYSTEM_TRAVERSED;
+    ia_state_ |= STATE_SYSTEM_TRAVERSED;
 
   // WebKit marks everything as readonly unless it's editable text, so if it's
   // not readonly, mark it as editable now. The final computation of the
   // READONLY state for MSAA is below, after the switch.
   if (!HasState(ui::AX_STATE_READ_ONLY))
-    ia2_state |= IA2_STATE_EDITABLE;
+    ia2_state_ |= IA2_STATE_EDITABLE;
 
   if (GetBoolAttribute(ui::AX_ATTR_BUTTON_MIXED))
-    ia_state |= STATE_SYSTEM_MIXED;
+    ia_state_ |= STATE_SYSTEM_MIXED;
 
   if (GetBoolAttribute(ui::AX_ATTR_CAN_SET_VALUE))
-    ia2_state |= IA2_STATE_EDITABLE;
+    ia2_state_ |= IA2_STATE_EDITABLE;
 
   if (!GetStringAttribute(ui::AX_ATTR_AUTO_COMPLETE).empty())
-    ia2_state |= IA2_STATE_SUPPORTS_AUTOCOMPLETION;
+    ia2_state_ |= IA2_STATE_SUPPORTS_AUTOCOMPLETION;
 
   base::string16 html_tag = GetString16Attribute(
       ui::AX_ATTR_HTML_TAG);
+  ia_role_ = 0;
+  ia2_role_ = 0;
   switch (GetRole()) {
     case ui::AX_ROLE_ALERT:
-      ia_role = ROLE_SYSTEM_ALERT;
+      ia_role_ = ROLE_SYSTEM_ALERT;
       break;
     case ui::AX_ROLE_ALERT_DIALOG:
-      ia_role = ROLE_SYSTEM_DIALOG;
+      ia_role_ = ROLE_SYSTEM_DIALOG;
       break;
     case ui::AX_ROLE_APPLICATION:
-      ia_role = ROLE_SYSTEM_APPLICATION;
+      ia_role_ = ROLE_SYSTEM_APPLICATION;
       break;
     case ui::AX_ROLE_ARTICLE:
-      ia_role = ROLE_SYSTEM_DOCUMENT;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_DOCUMENT;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_BANNER:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_HEADER;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_HEADER;
       break;
     case ui::AX_ROLE_BLOCKQUOTE:
-      role_name = html_tag;
-      ia2_role = IA2_ROLE_SECTION;
+      role_name_ = html_tag;
+      ia2_role_ = IA2_ROLE_SECTION;
       break;
     case ui::AX_ROLE_BUSY_INDICATOR:
-      ia_role = ROLE_SYSTEM_ANIMATION;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_ANIMATION;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_BUTTON:
-      ia_role = ROLE_SYSTEM_PUSHBUTTON;
+      ia_role_ = ROLE_SYSTEM_PUSHBUTTON;
       break;
     case ui::AX_ROLE_CANVAS:
       if (GetBoolAttribute(ui::AX_ATTR_CANVAS_HAS_FALLBACK)) {
-        role_name = L"canvas";
-        ia2_role = IA2_ROLE_CANVAS;
+        role_name_ = L"canvas";
+        ia2_role_ = IA2_ROLE_CANVAS;
       } else {
-        ia_role = ROLE_SYSTEM_GRAPHIC;
+        ia_role_ = ROLE_SYSTEM_GRAPHIC;
       }
       break;
     case ui::AX_ROLE_CAPTION:
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_role = IA2_ROLE_CAPTION;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_role_ = IA2_ROLE_CAPTION;
       break;
     case ui::AX_ROLE_CELL:
-      ia_role = ROLE_SYSTEM_CELL;
+      ia_role_ = ROLE_SYSTEM_CELL;
       break;
     case ui::AX_ROLE_CHECK_BOX:
-      ia_role = ROLE_SYSTEM_CHECKBUTTON;
-      ia2_state |= IA2_STATE_CHECKABLE;
+      ia_role_ = ROLE_SYSTEM_CHECKBUTTON;
+      ia2_state_ |= IA2_STATE_CHECKABLE;
       break;
     case ui::AX_ROLE_COLOR_WELL:
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_role = IA2_ROLE_COLOR_CHOOSER;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_role_ = IA2_ROLE_COLOR_CHOOSER;
       break;
     case ui::AX_ROLE_COLUMN:
-      ia_role = ROLE_SYSTEM_COLUMN;
+      ia_role_ = ROLE_SYSTEM_COLUMN;
       break;
     case ui::AX_ROLE_COLUMN_HEADER:
-      ia_role = ROLE_SYSTEM_COLUMNHEADER;
+      ia_role_ = ROLE_SYSTEM_COLUMNHEADER;
       break;
     case ui::AX_ROLE_COMBO_BOX:
-      ia_role = ROLE_SYSTEM_COMBOBOX;
+      ia_role_ = ROLE_SYSTEM_COMBOBOX;
       break;
     case ui::AX_ROLE_COMPLEMENTARY:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_NOTE;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_NOTE;
       break;
     case ui::AX_ROLE_CONTENT_INFO:
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_role = IA2_ROLE_PARAGRAPH;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_role_ = IA2_ROLE_PARAGRAPH;
       break;
     case ui::AX_ROLE_DATE:
     case ui::AX_ROLE_DATE_TIME:
-      ia_role = ROLE_SYSTEM_DROPLIST;
-      ia2_role = IA2_ROLE_DATE_EDITOR;
+      ia_role_ = ROLE_SYSTEM_DROPLIST;
+      ia2_role_ = IA2_ROLE_DATE_EDITOR;
       break;
     case ui::AX_ROLE_DIV:
-      role_name = L"div";
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_SECTION;
+      role_name_ = L"div";
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_SECTION;
       break;
     case ui::AX_ROLE_DEFINITION:
-      role_name = html_tag;
-      ia2_role = IA2_ROLE_PARAGRAPH;
-      ia_state |= STATE_SYSTEM_READONLY;
+      role_name_ = html_tag;
+      ia2_role_ = IA2_ROLE_PARAGRAPH;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_DESCRIPTION_LIST_DETAIL:
-      role_name = html_tag;
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_role = IA2_ROLE_PARAGRAPH;
+      role_name_ = html_tag;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_role_ = IA2_ROLE_PARAGRAPH;
       break;
     case ui::AX_ROLE_DESCRIPTION_LIST:
-      role_name = html_tag;
-      ia_role = ROLE_SYSTEM_LIST;
-      ia_state |= STATE_SYSTEM_READONLY;
+      role_name_ = html_tag;
+      ia_role_ = ROLE_SYSTEM_LIST;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_DESCRIPTION_LIST_TERM:
-      ia_role = ROLE_SYSTEM_LISTITEM;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_LISTITEM;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_DETAILS:
-      role_name = html_tag;
-      ia_role = ROLE_SYSTEM_GROUPING;
+      role_name_ = html_tag;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
       break;
     case ui::AX_ROLE_DIALOG:
-      ia_role = ROLE_SYSTEM_DIALOG;
+      ia_role_ = ROLE_SYSTEM_DIALOG;
       break;
     case ui::AX_ROLE_DISCLOSURE_TRIANGLE:
-      ia_role = ROLE_SYSTEM_PUSHBUTTON;
+      ia_role_ = ROLE_SYSTEM_PUSHBUTTON;
       break;
     case ui::AX_ROLE_DOCUMENT:
     case ui::AX_ROLE_ROOT_WEB_AREA:
     case ui::AX_ROLE_WEB_AREA:
-      ia_role = ROLE_SYSTEM_DOCUMENT;
-      ia_state |= STATE_SYSTEM_READONLY;
-      ia_state |= STATE_SYSTEM_FOCUSABLE;
+      ia_role_ = ROLE_SYSTEM_DOCUMENT;
+      ia_state_ |= STATE_SYSTEM_READONLY;
+      ia_state_ |= STATE_SYSTEM_FOCUSABLE;
       break;
     case ui::AX_ROLE_EMBEDDED_OBJECT:
-      ia_role = ROLE_SYSTEM_CLIENT;
-      ia2_role = IA2_ROLE_EMBEDDED_OBJECT;
+      ia_role_ = ROLE_SYSTEM_CLIENT;
+      ia2_role_ = IA2_ROLE_EMBEDDED_OBJECT;
       break;
     case ui::AX_ROLE_FIGCAPTION:
-      role_name = html_tag;
-      ia2_role = IA2_ROLE_CAPTION;
+      role_name_ = html_tag;
+      ia2_role_ = IA2_ROLE_CAPTION;
       break;
     case ui::AX_ROLE_FIGURE:
-      ia_role = ROLE_SYSTEM_GROUPING;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
       break;
     case ui::AX_ROLE_FORM:
-      role_name = L"form";
-      ia2_role = IA2_ROLE_FORM;
+      role_name_ = L"form";
+      ia2_role_ = IA2_ROLE_FORM;
       break;
     case ui::AX_ROLE_FOOTER:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_FOOTER;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_FOOTER;
       break;
     case ui::AX_ROLE_GRID:
-      ia_role = ROLE_SYSTEM_TABLE;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_TABLE;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_GROUP: {
       base::string16 aria_role = GetString16Attribute(
           ui::AX_ATTR_ROLE);
       if (aria_role == L"group" || html_tag == L"fieldset") {
-        ia_role = ROLE_SYSTEM_GROUPING;
+        ia_role_ = ROLE_SYSTEM_GROUPING;
       } else if (html_tag == L"li") {
-        ia_role = ROLE_SYSTEM_LISTITEM;
-        ia_state |= STATE_SYSTEM_READONLY;
+        ia_role_ = ROLE_SYSTEM_LISTITEM;
+        ia_state_ |= STATE_SYSTEM_READONLY;
       } else {
         if (html_tag.empty())
-          role_name = L"div";
+          role_name_ = L"div";
         else
-          role_name = html_tag;
-        ia2_role = IA2_ROLE_SECTION;
+          role_name_ = html_tag;
+        ia2_role_ = IA2_ROLE_SECTION;
       }
       break;
     }
     case ui::AX_ROLE_HEADING:
-      role_name = html_tag;
-      ia2_role = IA2_ROLE_HEADING;
+      role_name_ = html_tag;
+      ia2_role_ = IA2_ROLE_HEADING;
       break;
     case ui::AX_ROLE_IFRAME:
-      ia_role = ROLE_SYSTEM_DOCUMENT;
-      ia2_role = IA2_ROLE_INTERNAL_FRAME;
-      ia_state = STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_DOCUMENT;
+      ia2_role_ = IA2_ROLE_INTERNAL_FRAME;
+      ia_state_ = STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_IFRAME_PRESENTATIONAL:
-      ia_role = ROLE_SYSTEM_GROUPING;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
       break;
     case ui::AX_ROLE_IMAGE:
-      ia_role = ROLE_SYSTEM_GRAPHIC;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_GRAPHIC;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_IMAGE_MAP:
-      role_name = html_tag;
-      ia2_role = IA2_ROLE_IMAGE_MAP;
-      ia_state |= STATE_SYSTEM_READONLY;
+      role_name_ = html_tag;
+      ia2_role_ = IA2_ROLE_IMAGE_MAP;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_IMAGE_MAP_LINK:
-      ia_role = ROLE_SYSTEM_LINK;
-      ia_state |= STATE_SYSTEM_LINKED;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_LINK;
+      ia_state_ |= STATE_SYSTEM_LINKED;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_LABEL_TEXT:
     case ui::AX_ROLE_LEGEND:
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_role = IA2_ROLE_LABEL;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_role_ = IA2_ROLE_LABEL;
       break;
     case ui::AX_ROLE_SEARCH:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_SECTION;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_SECTION;
       break;
     case ui::AX_ROLE_LINK:
-      ia_role = ROLE_SYSTEM_LINK;
-      ia_state |= STATE_SYSTEM_LINKED;
+      ia_role_ = ROLE_SYSTEM_LINK;
+      ia_state_ |= STATE_SYSTEM_LINKED;
       break;
     case ui::AX_ROLE_LIST:
-      ia_role = ROLE_SYSTEM_LIST;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_LIST;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_LIST_BOX:
-      ia_role = ROLE_SYSTEM_LIST;
+      ia_role_ = ROLE_SYSTEM_LIST;
       break;
     case ui::AX_ROLE_LIST_BOX_OPTION:
-      ia_role = ROLE_SYSTEM_LISTITEM;
-      if (ia_state & STATE_SYSTEM_SELECTABLE) {
-        ia_state |= STATE_SYSTEM_FOCUSABLE;
+      ia_role_ = ROLE_SYSTEM_LISTITEM;
+      if (ia_state_ & STATE_SYSTEM_SELECTABLE) {
+        ia_state_ |= STATE_SYSTEM_FOCUSABLE;
         if (HasState(ui::AX_STATE_FOCUSED))
-          ia_state |= STATE_SYSTEM_FOCUSED;
+          ia_state_ |= STATE_SYSTEM_FOCUSED;
       }
       break;
     case ui::AX_ROLE_LIST_ITEM:
-      ia_role = ROLE_SYSTEM_LISTITEM;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_LISTITEM;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_MAIN:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_PARAGRAPH;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_PARAGRAPH;
       break;
     case ui::AX_ROLE_MARQUEE:
-      ia_role = ROLE_SYSTEM_ANIMATION;
+      ia_role_ = ROLE_SYSTEM_ANIMATION;
       break;
     case ui::AX_ROLE_MATH:
-      ia_role = ROLE_SYSTEM_EQUATION;
+      ia_role_ = ROLE_SYSTEM_EQUATION;
       break;
     case ui::AX_ROLE_MENU:
     case ui::AX_ROLE_MENU_BUTTON:
-      ia_role = ROLE_SYSTEM_MENUPOPUP;
+      ia_role_ = ROLE_SYSTEM_MENUPOPUP;
       break;
     case ui::AX_ROLE_MENU_BAR:
-      ia_role = ROLE_SYSTEM_MENUBAR;
+      ia_role_ = ROLE_SYSTEM_MENUBAR;
       break;
     case ui::AX_ROLE_MENU_ITEM:
-      ia_role = ROLE_SYSTEM_MENUITEM;
+      ia_role_ = ROLE_SYSTEM_MENUITEM;
       break;
     case ui::AX_ROLE_MENU_ITEM_CHECK_BOX:
-      ia_role = ROLE_SYSTEM_MENUITEM;
-      ia2_role = IA2_ROLE_CHECK_MENU_ITEM;
-      ia2_state |= IA2_STATE_CHECKABLE;
+      ia_role_ = ROLE_SYSTEM_MENUITEM;
+      ia2_role_ = IA2_ROLE_CHECK_MENU_ITEM;
+      ia2_state_ |= IA2_STATE_CHECKABLE;
       break;
     case ui::AX_ROLE_MENU_ITEM_RADIO:
-      ia_role = ROLE_SYSTEM_MENUITEM;
-      ia2_role = IA2_ROLE_RADIO_MENU_ITEM;
+      ia_role_ = ROLE_SYSTEM_MENUITEM;
+      ia2_role_ = IA2_ROLE_RADIO_MENU_ITEM;
       break;
     case ui::AX_ROLE_MENU_LIST_POPUP:
-      ia_role = ROLE_SYSTEM_CLIENT;
+      ia_role_ = ROLE_SYSTEM_CLIENT;
       break;
     case ui::AX_ROLE_MENU_LIST_OPTION:
-      ia_role = ROLE_SYSTEM_LISTITEM;
-      if (ia_state & STATE_SYSTEM_SELECTABLE) {
-        ia_state |= STATE_SYSTEM_FOCUSABLE;
+      ia_role_ = ROLE_SYSTEM_LISTITEM;
+      if (ia_state_ & STATE_SYSTEM_SELECTABLE) {
+        ia_state_ |= STATE_SYSTEM_FOCUSABLE;
         if (HasState(ui::AX_STATE_FOCUSED))
-          ia_state |= STATE_SYSTEM_FOCUSED;
+          ia_state_ |= STATE_SYSTEM_FOCUSED;
       }
       break;
     case ui::AX_ROLE_METER:
-      role_name = html_tag;
-      ia_role = ROLE_SYSTEM_PROGRESSBAR;
+      role_name_ = html_tag;
+      ia_role_ = ROLE_SYSTEM_PROGRESSBAR;
       break;
     case ui::AX_ROLE_NAVIGATION:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_SECTION;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_SECTION;
       break;
     case ui::AX_ROLE_NOTE:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_NOTE;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_NOTE;
       break;
     case ui::AX_ROLE_OUTLINE:
-      ia_role = ROLE_SYSTEM_OUTLINE;
+      ia_role_ = ROLE_SYSTEM_OUTLINE;
       break;
     case ui::AX_ROLE_PARAGRAPH:
-      role_name = L"P";
-      ia2_role = IA2_ROLE_PARAGRAPH;
+      role_name_ = L"P";
+      ia2_role_ = IA2_ROLE_PARAGRAPH;
       break;
     case ui::AX_ROLE_POP_UP_BUTTON:
       if (html_tag == L"select") {
-        ia_role = ROLE_SYSTEM_COMBOBOX;
+        ia_role_ = ROLE_SYSTEM_COMBOBOX;
       } else {
-        ia_role = ROLE_SYSTEM_BUTTONMENU;
+        ia_role_ = ROLE_SYSTEM_BUTTONMENU;
       }
       break;
     case ui::AX_ROLE_PRE:
-      role_name = html_tag;
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_role = IA2_ROLE_PARAGRAPH;
+      role_name_ = html_tag;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_role_ = IA2_ROLE_PARAGRAPH;
       break;
     case ui::AX_ROLE_PROGRESS_INDICATOR:
-      ia_role = ROLE_SYSTEM_PROGRESSBAR;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_PROGRESSBAR;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_RADIO_BUTTON:
-      ia_role = ROLE_SYSTEM_RADIOBUTTON;
-      ia2_state = IA2_STATE_CHECKABLE;
+      ia_role_ = ROLE_SYSTEM_RADIOBUTTON;
+      ia2_state_ = IA2_STATE_CHECKABLE;
       break;
     case ui::AX_ROLE_RADIO_GROUP:
-      ia_role = ROLE_SYSTEM_GROUPING;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
       break;
     case ui::AX_ROLE_REGION:
       if (html_tag == L"section") {
-        ia_role = ROLE_SYSTEM_GROUPING;
-        ia2_role = IA2_ROLE_SECTION;
+        ia_role_ = ROLE_SYSTEM_GROUPING;
+        ia2_role_ = IA2_ROLE_SECTION;
       } else {
-        ia_role = ROLE_SYSTEM_PANE;
+        ia_role_ = ROLE_SYSTEM_PANE;
       }
       break;
     case ui::AX_ROLE_ROW:
-      ia_role = ROLE_SYSTEM_ROW;
+      ia_role_ = ROLE_SYSTEM_ROW;
       break;
     case ui::AX_ROLE_ROW_HEADER:
-      ia_role = ROLE_SYSTEM_ROWHEADER;
+      ia_role_ = ROLE_SYSTEM_ROWHEADER;
       break;
     case ui::AX_ROLE_RUBY:
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_role = IA2_ROLE_TEXT_FRAME;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_role_ = IA2_ROLE_TEXT_FRAME;
       break;
     case ui::AX_ROLE_RULER:
-      ia_role = ROLE_SYSTEM_CLIENT;
-      ia2_role = IA2_ROLE_RULER;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_CLIENT;
+      ia2_role_ = IA2_ROLE_RULER;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_SCROLL_AREA:
-      ia_role = ROLE_SYSTEM_CLIENT;
-      ia2_role = IA2_ROLE_SCROLL_PANE;
-      ia_state |= STATE_SYSTEM_READONLY;
-      ia2_state &= ~(IA2_STATE_EDITABLE);
+      ia_role_ = ROLE_SYSTEM_CLIENT;
+      ia2_role_ = IA2_ROLE_SCROLL_PANE;
+      ia_state_ |= STATE_SYSTEM_READONLY;
+      ia2_state_ &= ~(IA2_STATE_EDITABLE);
       break;
     case ui::AX_ROLE_SCROLL_BAR:
-      ia_role = ROLE_SYSTEM_SCROLLBAR;
+      ia_role_ = ROLE_SYSTEM_SCROLLBAR;
       break;
     case ui::AX_ROLE_SLIDER:
-      ia_role = ROLE_SYSTEM_SLIDER;
+      ia_role_ = ROLE_SYSTEM_SLIDER;
       break;
     case ui::AX_ROLE_SPIN_BUTTON:
-      ia_role = ROLE_SYSTEM_SPINBUTTON;
+      ia_role_ = ROLE_SYSTEM_SPINBUTTON;
       break;
     case ui::AX_ROLE_SPIN_BUTTON_PART:
-      ia_role = ROLE_SYSTEM_PUSHBUTTON;
+      ia_role_ = ROLE_SYSTEM_PUSHBUTTON;
       break;
     case ui::AX_ROLE_ANNOTATION:
     case ui::AX_ROLE_LIST_MARKER:
     case ui::AX_ROLE_STATIC_TEXT:
-      ia_role = ROLE_SYSTEM_STATICTEXT;
+      ia_role_ = ROLE_SYSTEM_STATICTEXT;
       break;
     case ui::AX_ROLE_STATUS:
-      ia_role = ROLE_SYSTEM_STATUSBAR;
+      ia_role_ = ROLE_SYSTEM_STATUSBAR;
       break;
     case ui::AX_ROLE_SPLITTER:
-      ia_role = ROLE_SYSTEM_SEPARATOR;
+      ia_role_ = ROLE_SYSTEM_SEPARATOR;
       break;
     case ui::AX_ROLE_SVG_ROOT:
-      ia_role = ROLE_SYSTEM_GRAPHIC;
+      ia_role_ = ROLE_SYSTEM_GRAPHIC;
       break;
     case ui::AX_ROLE_TAB:
-      ia_role = ROLE_SYSTEM_PAGETAB;
+      ia_role_ = ROLE_SYSTEM_PAGETAB;
       break;
     case ui::AX_ROLE_TABLE: {
       base::string16 aria_role = GetString16Attribute(
           ui::AX_ATTR_ROLE);
       if (aria_role == L"treegrid") {
-        ia_role = ROLE_SYSTEM_OUTLINE;
+        ia_role_ = ROLE_SYSTEM_OUTLINE;
       } else {
-        ia_role = ROLE_SYSTEM_TABLE;
+        ia_role_ = ROLE_SYSTEM_TABLE;
       }
       break;
     }
     case ui::AX_ROLE_TABLE_HEADER_CONTAINER:
-      ia_role = ROLE_SYSTEM_GROUPING;
-      ia2_role = IA2_ROLE_SECTION;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_GROUPING;
+      ia2_role_ = IA2_ROLE_SECTION;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_TAB_LIST:
-      ia_role = ROLE_SYSTEM_PAGETABLIST;
+      ia_role_ = ROLE_SYSTEM_PAGETABLIST;
       break;
     case ui::AX_ROLE_TAB_PANEL:
-      ia_role = ROLE_SYSTEM_PROPERTYPAGE;
+      ia_role_ = ROLE_SYSTEM_PROPERTYPAGE;
       break;
     case ui::AX_ROLE_TOGGLE_BUTTON:
-      ia_role = ROLE_SYSTEM_PUSHBUTTON;
-      ia2_role = IA2_ROLE_TOGGLE_BUTTON;
+      ia_role_ = ROLE_SYSTEM_PUSHBUTTON;
+      ia2_role_ = IA2_ROLE_TOGGLE_BUTTON;
       break;
     case ui::AX_ROLE_TEXT_AREA:
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_state |= IA2_STATE_MULTI_LINE;
-      ia2_state |= IA2_STATE_EDITABLE;
-      ia2_state |= IA2_STATE_SELECTABLE_TEXT;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_state_ |= IA2_STATE_MULTI_LINE;
+      ia2_state_ |= IA2_STATE_EDITABLE;
+      ia2_state_ |= IA2_STATE_SELECTABLE_TEXT;
       break;
     case ui::AX_ROLE_TEXT_FIELD:
-      ia_role = ROLE_SYSTEM_TEXT;
-      ia2_state |= IA2_STATE_SINGLE_LINE;
-      ia2_state |= IA2_STATE_EDITABLE;
-      ia2_state |= IA2_STATE_SELECTABLE_TEXT;
+      ia_role_ = ROLE_SYSTEM_TEXT;
+      ia2_state_ |= IA2_STATE_SINGLE_LINE;
+      ia2_state_ |= IA2_STATE_EDITABLE;
+      ia2_state_ |= IA2_STATE_SELECTABLE_TEXT;
       break;
     case ui::AX_ROLE_TIME:
-      ia_role = ROLE_SYSTEM_SPINBUTTON;
+      ia_role_ = ROLE_SYSTEM_SPINBUTTON;
       break;
     case ui::AX_ROLE_TIMER:
-      ia_role = ROLE_SYSTEM_CLOCK;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_CLOCK;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_TOOLBAR:
-      ia_role = ROLE_SYSTEM_TOOLBAR;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_TOOLBAR;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_TOOLTIP:
-      ia_role = ROLE_SYSTEM_TOOLTIP;
-      ia_state |= STATE_SYSTEM_READONLY;
+      ia_role_ = ROLE_SYSTEM_TOOLTIP;
+      ia_state_ |= STATE_SYSTEM_READONLY;
       break;
     case ui::AX_ROLE_TREE:
-      ia_role = ROLE_SYSTEM_OUTLINE;
+      ia_role_ = ROLE_SYSTEM_OUTLINE;
       break;
     case ui::AX_ROLE_TREE_GRID:
-      ia_role = ROLE_SYSTEM_OUTLINE;
+      ia_role_ = ROLE_SYSTEM_OUTLINE;
       break;
     case ui::AX_ROLE_TREE_ITEM:
-      ia_role = ROLE_SYSTEM_OUTLINEITEM;
+      ia_role_ = ROLE_SYSTEM_OUTLINEITEM;
       break;
     case ui::AX_ROLE_LINE_BREAK:
-      ia_role = ROLE_SYSTEM_WHITESPACE;
+      ia_role_ = ROLE_SYSTEM_WHITESPACE;
       break;
     case ui::AX_ROLE_WINDOW:
-      ia_role = ROLE_SYSTEM_WINDOW;
+      ia_role_ = ROLE_SYSTEM_WINDOW;
       break;
 
     // TODO(dmazzoni): figure out the proper MSAA role for all of these.
     case ui::AX_ROLE_DIRECTORY:
     case ui::AX_ROLE_IGNORED:
     case ui::AX_ROLE_LOG:
     case ui::AX_ROLE_NONE:
     case ui::AX_ROLE_PRESENTATIONAL:
     case ui::AX_ROLE_SLIDER_THUMB:
     default:
-      ia_role = ROLE_SYSTEM_CLIENT;
+      ia_role_ = ROLE_SYSTEM_CLIENT;
       break;
   }
 
   // Compute the final value of READONLY for MSAA.
   //
   // We always set the READONLY state for elements that have the
   // aria-readonly attribute and for a few roles (in the switch above).
   // We clear the READONLY state on focusable controls and on a document.
   // Everything else, the majority of objects, do not have this state set.
   if (HasState(ui::AX_STATE_FOCUSABLE) &&
-      ia_role != ROLE_SYSTEM_DOCUMENT) {
-    ia_state &= ~(STATE_SYSTEM_READONLY);
+      ia_role_ != ROLE_SYSTEM_DOCUMENT) {
+    ia_state_ &= ~(STATE_SYSTEM_READONLY);
   }
   if (!HasState(ui::AX_STATE_READ_ONLY))
-    ia_state &= ~(STATE_SYSTEM_READONLY);
+    ia_state_ &= ~(STATE_SYSTEM_READONLY);
   if (GetBoolAttribute(ui::AX_ATTR_ARIA_READONLY))
-    ia_state |= STATE_SYSTEM_READONLY;
+    ia_state_ |= STATE_SYSTEM_READONLY;
 
   // The role should always be set.
-  DCHECK(!role_name.empty() || ia_role);
+  DCHECK(!role_name_.empty() || ia_role_);
 
   // If we didn't explicitly set the IAccessible2 role, make it the same
   // as the MSAA role.
-  if (!ia2_role)
-    ia2_role = ia_role;
-
-  win_attributes_->ia_role = ia_role;
-  win_attributes_->ia_state = ia_state;
-  win_attributes_->role_name = role_name;
-  win_attributes_->ia2_role = ia2_role;
-  win_attributes_->ia2_state = ia2_state;
+  if (!ia2_role_)
+    ia2_role_ = ia_role_;
 }
 
 }  // namespace content