Revert of Refactor content/renderer/accessibility to use AXTreeSerializer.

content/renderer/accessibility/blink_ax_tree_source.cc

Index: content/renderer/accessibility/blink_ax_tree_source.cc
diff --git a/content/renderer/accessibility/blink_ax_tree_source.cc b/content/renderer/accessibility/blink_ax_tree_source.cc
deleted file mode 100644
index c6db99fa4f7dd717a225179cbfafdf2b9683896e..0000000000000000000000000000000000000000
--- a/content/renderer/accessibility/blink_ax_tree_source.cc
+++ /dev/null
@@ -1,552 +0,0 @@
-// Copyright (c) 2014 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/renderer/accessibility/blink_ax_tree_source.h"
-
-#include <set>
-
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "content/renderer/accessibility/blink_ax_enum_conversion.h"
-#include "content/renderer/render_view_impl.h"
-#include "third_party/WebKit/public/platform/WebRect.h"
-#include "third_party/WebKit/public/platform/WebSize.h"
-#include "third_party/WebKit/public/platform/WebString.h"
-#include "third_party/WebKit/public/platform/WebVector.h"
-#include "third_party/WebKit/public/web/WebAXEnums.h"
-#include "third_party/WebKit/public/web/WebAXObject.h"
-#include "third_party/WebKit/public/web/WebDocument.h"
-#include "third_party/WebKit/public/web/WebDocumentType.h"
-#include "third_party/WebKit/public/web/WebElement.h"
-#include "third_party/WebKit/public/web/WebFormControlElement.h"
-#include "third_party/WebKit/public/web/WebFrame.h"
-#include "third_party/WebKit/public/web/WebInputElement.h"
-#include "third_party/WebKit/public/web/WebNode.h"
-#include "third_party/WebKit/public/web/WebView.h"
-
-using base::ASCIIToUTF16;
-using base::UTF16ToUTF8;
-using blink::WebAXObject;
-using blink::WebDocument;
-using blink::WebDocumentType;
-using blink::WebElement;
-using blink::WebFrame;
-using blink::WebNode;
-using blink::WebVector;
-using blink::WebView;
-
-namespace content {
-
-namespace {
-
-// Returns true if |ancestor| is the first unignored parent of |child|,
-// which means that when walking up the parent chain from |child|,
-// |ancestor| is the *first* ancestor that isn't marked as
-// accessibilityIsIgnored().
-bool IsParentUnignoredOf(WebAXObject ancestor,
-                         WebAXObject child) {
-  WebAXObject parent = child.parentObject();
-  while (!parent.isDetached() && parent.accessibilityIsIgnored())
-    parent = parent.parentObject();
-  return parent.equals(ancestor);
-}
-
-bool IsTrue(std::string html_value) {
-  return LowerCaseEqualsASCII(html_value, "true");
-}
-
-std::string GetEquivalentAriaRoleString(const ui::AXRole role) {
-  switch (role) {
-    case ui::AX_ROLE_ARTICLE:
-      return "article";
-    case ui::AX_ROLE_BANNER:
-      return "banner";
-    case ui::AX_ROLE_COMPLEMENTARY:
-      return "complementary";
-    case ui::AX_ROLE_CONTENT_INFO:
-    case ui::AX_ROLE_FOOTER:
-      return "contentinfo";
-    case ui::AX_ROLE_MAIN:
-      return "main";
-    case ui::AX_ROLE_NAVIGATION:
-      return "navigation";
-    case ui::AX_ROLE_REGION:
-      return "region";
-    default:
-      break;
-  }
-
-  return std::string();
-}
-
-void AddIntListAttributeFromWebObjects(ui::AXIntListAttribute attr,
-                                       WebVector<WebAXObject> objects,
-                                       ui::AXNodeData* dst) {
-  std::vector<int32> ids;
-  for(size_t i = 0; i < objects.size(); i++)
-    ids.push_back(objects[i].axID());
-  if (ids.size() > 0)
-    dst->AddIntListAttribute(attr, ids);
-}
-
-}  // Anonymous namespace
-
-BlinkAXTreeSource::BlinkAXTreeSource(RenderViewImpl* render_view)
-    : render_view_(render_view) {
-}
-
-BlinkAXTreeSource::~BlinkAXTreeSource() {
-}
-
-blink::WebAXObject BlinkAXTreeSource::GetRoot() const {
-  return GetMainDocument().accessibilityObject();
-}
-
-blink::WebAXObject BlinkAXTreeSource::GetFromId(int32 id) const {
-  return GetMainDocument().accessibilityObjectFromID(id);
-}
-
-int32 BlinkAXTreeSource::GetId(blink::WebAXObject node) const {
-  return node.axID();
-}
-
-void BlinkAXTreeSource::GetChildren(
-    blink::WebAXObject parent,
-    std::vector<blink::WebAXObject>* out_children) const {
-  bool is_iframe = false;
-  WebNode node = parent.node();
-  if (!node.isNull() && node.isElementNode()) {
-    WebElement element = node.to<WebElement>();
-    is_iframe = (element.tagName() == ASCIIToUTF16("IFRAME"));
-  }
-
-  for (unsigned i = 0; i < parent.childCount(); i++) {
-    blink::WebAXObject child = parent.childAt(i);
-
-    // The child may be invalid due to issues in blink accessibility code.
-    if (child.isDetached())
-      continue;
-
-    // Skip children whose parent isn't |parent|.
-    // As an exception, include children of an iframe element.
-    if (!is_iframe && !IsParentUnignoredOf(parent, child))
-      continue;
-
-    out_children->push_back(child);
-  }
-}
-
-blink::WebAXObject BlinkAXTreeSource::GetParent(
-    blink::WebAXObject node) const {
-  // Blink returns ignored objects when walking up the parent chain,
-  // we have to skip those here. Also, stop when we get to the root
-  // element.
-  blink::WebAXObject root = GetRoot();
-  do {
-    if (node.equals(root))
-      return blink::WebAXObject();
-    node = node.parentObject();
-  } while (!node.isDetached() && node.accessibilityIsIgnored());
-
-  return node;
-}
-
-bool BlinkAXTreeSource::IsValid(blink::WebAXObject node) const {
-  return !node.isDetached();  // This also checks if it's null.
-}
-
-bool BlinkAXTreeSource::IsEqual(blink::WebAXObject node1,
-                                blink::WebAXObject node2) const {
-  return node1.equals(node2);
-}
-
-blink::WebAXObject BlinkAXTreeSource::GetNull() const {
-  return blink::WebAXObject();
-}
-
-void BlinkAXTreeSource::SerializeNode(blink::WebAXObject src,
-                                      ui::AXNodeData* dst) const {
-  dst->role = AXRoleFromBlink(src.role());
-  dst->state = AXStateFromBlink(src);
-  dst->location = src.boundingBoxRect();
-  dst->id = src.axID();
-  std::string name = UTF16ToUTF8(src.title());
-
-  std::string value;
-  if (src.valueDescription().length()) {
-    dst->AddStringAttribute(ui::AX_ATTR_VALUE,
-                            UTF16ToUTF8(src.valueDescription()));
-  } else {
-    dst->AddStringAttribute(ui::AX_ATTR_VALUE, UTF16ToUTF8(src.stringValue()));
-  }
-
-  if (dst->role == ui::AX_ROLE_COLOR_WELL) {
-    int r, g, b;
-    src.colorValue(r, g, b);
-    dst->AddIntAttribute(ui::AX_ATTR_COLOR_VALUE_RED, r);
-    dst->AddIntAttribute(ui::AX_ATTR_COLOR_VALUE_GREEN, g);
-    dst->AddIntAttribute(ui::AX_ATTR_COLOR_VALUE_BLUE, b);
-  }
-
-  if (dst->role == ui::AX_ROLE_INLINE_TEXT_BOX) {
-    dst->AddIntAttribute(ui::AX_ATTR_TEXT_DIRECTION,
-                         AXTextDirectionFromBlink(src.textDirection()));
-
-    WebVector<int> src_character_offsets;
-    src.characterOffsets(src_character_offsets);
-    std::vector<int32> character_offsets;
-    character_offsets.reserve(src_character_offsets.size());
-    for (size_t i = 0; i < src_character_offsets.size(); ++i)
-      character_offsets.push_back(src_character_offsets[i]);
-    dst->AddIntListAttribute(ui::AX_ATTR_CHARACTER_OFFSETS, character_offsets);
-
-    WebVector<int> src_word_starts;
-    WebVector<int> src_word_ends;
-    src.wordBoundaries(src_word_starts, src_word_ends);
-    std::vector<int32> word_starts;
-    std::vector<int32> word_ends;
-    word_starts.reserve(src_word_starts.size());
-    word_ends.reserve(src_word_starts.size());
-    for (size_t i = 0; i < src_word_starts.size(); ++i) {
-      word_starts.push_back(src_word_starts[i]);
-      word_ends.push_back(src_word_ends[i]);
-    }
-    dst->AddIntListAttribute(ui::AX_ATTR_WORD_STARTS, word_starts);
-    dst->AddIntListAttribute(ui::AX_ATTR_WORD_ENDS, word_ends);
-  }
-
-  if (src.accessKey().length()) {
-    dst->AddStringAttribute(ui::AX_ATTR_ACCESS_KEY,
-    UTF16ToUTF8(src.accessKey()));
-  }
-  if (src.actionVerb().length())
-    dst->AddStringAttribute(ui::AX_ATTR_ACTION, UTF16ToUTF8(src.actionVerb()));
-  if (src.isAriaReadOnly())
-    dst->AddBoolAttribute(ui::AX_ATTR_ARIA_READONLY, true);
-  if (src.isButtonStateMixed())
-    dst->AddBoolAttribute(ui::AX_ATTR_BUTTON_MIXED, true);
-  if (src.canSetValueAttribute())
-    dst->AddBoolAttribute(ui::AX_ATTR_CAN_SET_VALUE, true);
-  if (src.accessibilityDescription().length()) {
-    dst->AddStringAttribute(ui::AX_ATTR_DESCRIPTION,
-                            UTF16ToUTF8(src.accessibilityDescription()));
-  }
-  if (src.hasComputedStyle()) {
-    dst->AddStringAttribute(ui::AX_ATTR_DISPLAY,
-                            UTF16ToUTF8(src.computedStyleDisplay()));
-  }
-  if (src.helpText().length())
-    dst->AddStringAttribute(ui::AX_ATTR_HELP, UTF16ToUTF8(src.helpText()));
-  if (src.keyboardShortcut().length()) {
-    dst->AddStringAttribute(ui::AX_ATTR_SHORTCUT,
-                            UTF16ToUTF8(src.keyboardShortcut()));
-  }
-  if (!src.titleUIElement().isDetached()) {
-    dst->AddIntAttribute(ui::AX_ATTR_TITLE_UI_ELEMENT,
-                         src.titleUIElement().axID());
-  }
-  if (!src.ariaActiveDescendant().isDetached()) {
-    dst->AddIntAttribute(ui::AX_ATTR_ACTIVEDESCENDANT_ID,
-                         src.ariaActiveDescendant().axID());
-  }
-
-  if (!src.url().isEmpty())
-    dst->AddStringAttribute(ui::AX_ATTR_URL, src.url().spec());
-
-  if (dst->role == ui::AX_ROLE_HEADING)
-    dst->AddIntAttribute(ui::AX_ATTR_HIERARCHICAL_LEVEL, src.headingLevel());
-  else if ((dst->role == ui::AX_ROLE_TREE_ITEM ||
-            dst->role == ui::AX_ROLE_ROW) &&
-           src.hierarchicalLevel() > 0) {
-    dst->AddIntAttribute(ui::AX_ATTR_HIERARCHICAL_LEVEL,
-                         src.hierarchicalLevel());
-  }
-
-  // Treat the active list box item as focused.
-  if (dst->role == ui::AX_ROLE_LIST_BOX_OPTION &&
-      src.isSelectedOptionActive()) {
-    dst->state |= (1 << ui::AX_STATE_FOCUSED);
-  }
-
-  if (src.canvasHasFallbackContent())
-    dst->AddBoolAttribute(ui::AX_ATTR_CANVAS_HAS_FALLBACK, true);
-
-  WebNode node = src.node();
-  bool is_iframe = false;
-  std::string live_atomic;
-  std::string live_busy;
-  std::string live_status;
-  std::string live_relevant;
-
-  if (!node.isNull() && node.isElementNode()) {
-    WebElement element = node.to<WebElement>();
-    is_iframe = (element.tagName() == ASCIIToUTF16("IFRAME"));
-
-    if (LowerCaseEqualsASCII(element.getAttribute("aria-expanded"), "true"))
-      dst->state |= (1 << ui::AX_STATE_EXPANDED);
-
-    // TODO(ctguil): The tagName in WebKit is lower cased but
-    // HTMLElement::nodeName calls localNameUpper. Consider adding
-    // a WebElement method that returns the original lower cased tagName.
-    dst->AddStringAttribute(
-        ui::AX_ATTR_HTML_TAG,
-        StringToLowerASCII(UTF16ToUTF8(element.tagName())));
-    for (unsigned i = 0; i < element.attributeCount(); ++i) {
-      std::string name = StringToLowerASCII(UTF16ToUTF8(
-          element.attributeLocalName(i)));
-      std::string value = UTF16ToUTF8(element.attributeValue(i));
-      dst->html_attributes.push_back(std::make_pair(name, value));
-    }
-
-    if (dst->role == ui::AX_ROLE_EDITABLE_TEXT ||
-        dst->role == ui::AX_ROLE_TEXT_AREA ||
-        dst->role == ui::AX_ROLE_TEXT_FIELD) {
-      dst->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_START, src.selectionStart());
-      dst->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_END, src.selectionEnd());
-
-      WebVector<int> src_line_breaks;
-      src.lineBreaks(src_line_breaks);
-      if (src_line_breaks.size() > 0) {
-        std::vector<int32> line_breaks;
-        line_breaks.reserve(src_line_breaks.size());
-        for (size_t i = 0; i < src_line_breaks.size(); ++i)
-          line_breaks.push_back(src_line_breaks[i]);
-        dst->AddIntListAttribute(ui::AX_ATTR_LINE_BREAKS, line_breaks);
-      }
-    }
-
-    // ARIA role.
-    if (element.hasAttribute("role")) {
-      dst->AddStringAttribute(ui::AX_ATTR_ROLE,
-                              UTF16ToUTF8(element.getAttribute("role")));
-    } else {
-      std::string role = GetEquivalentAriaRoleString(dst->role);
-      if (!role.empty())
-        dst->AddStringAttribute(ui::AX_ATTR_ROLE, role);
-    }
-
-    // Live region attributes
-    live_atomic = UTF16ToUTF8(element.getAttribute("aria-atomic"));
-    live_busy = UTF16ToUTF8(element.getAttribute("aria-busy"));
-    live_status = UTF16ToUTF8(element.getAttribute("aria-live"));
-    live_relevant = UTF16ToUTF8(element.getAttribute("aria-relevant"));
-  }
-
-  // Walk up the parent chain to set live region attributes of containers
-  std::string container_live_atomic;
-  std::string container_live_busy;
-  std::string container_live_status;
-  std::string container_live_relevant;
-  WebAXObject container_accessible = src;
-  while (!container_accessible.isDetached()) {
-    WebNode container_node = container_accessible.node();
-    if (!container_node.isNull() && container_node.isElementNode()) {
-      WebElement container_elem = container_node.to<WebElement>();
-      if (container_elem.hasAttribute("aria-atomic") &&
-          container_live_atomic.empty()) {
-        container_live_atomic =
-            UTF16ToUTF8(container_elem.getAttribute("aria-atomic"));
-      }
-      if (container_elem.hasAttribute("aria-busy") &&
-          container_live_busy.empty()) {
-        container_live_busy =
-            UTF16ToUTF8(container_elem.getAttribute("aria-busy"));
-      }
-      if (container_elem.hasAttribute("aria-live") &&
-          container_live_status.empty()) {
-        container_live_status =
-            UTF16ToUTF8(container_elem.getAttribute("aria-live"));
-      }
-      if (container_elem.hasAttribute("aria-relevant") &&
-          container_live_relevant.empty()) {
-        container_live_relevant =
-            UTF16ToUTF8(container_elem.getAttribute("aria-relevant"));
-      }
-    }
-    container_accessible = container_accessible.parentObject();
-  }
-
-  if (!live_atomic.empty())
-    dst->AddBoolAttribute(ui::AX_ATTR_LIVE_ATOMIC, IsTrue(live_atomic));
-  if (!live_busy.empty())
-    dst->AddBoolAttribute(ui::AX_ATTR_LIVE_BUSY, IsTrue(live_busy));
-  if (!live_status.empty())
-    dst->AddStringAttribute(ui::AX_ATTR_LIVE_STATUS, live_status);
-  if (!live_relevant.empty())
-    dst->AddStringAttribute(ui::AX_ATTR_LIVE_RELEVANT, live_relevant);
-
-  if (!container_live_atomic.empty()) {
-    dst->AddBoolAttribute(ui::AX_ATTR_CONTAINER_LIVE_ATOMIC,
-                          IsTrue(container_live_atomic));
-  }
-  if (!container_live_busy.empty()) {
-    dst->AddBoolAttribute(ui::AX_ATTR_CONTAINER_LIVE_BUSY,
-                          IsTrue(container_live_busy));
-  }
-  if (!container_live_status.empty()) {
-    dst->AddStringAttribute(ui::AX_ATTR_CONTAINER_LIVE_STATUS,
-                            container_live_status);
-  }
-  if (!container_live_relevant.empty()) {
-    dst->AddStringAttribute(ui::AX_ATTR_CONTAINER_LIVE_RELEVANT,
-                            container_live_relevant);
-  }
-
-  if (dst->role == ui::AX_ROLE_PROGRESS_INDICATOR ||
-      dst->role == ui::AX_ROLE_SCROLL_BAR ||
-      dst->role == ui::AX_ROLE_SLIDER ||
-      dst->role == ui::AX_ROLE_SPIN_BUTTON) {
-    dst->AddFloatAttribute(ui::AX_ATTR_VALUE_FOR_RANGE, src.valueForRange());
-    dst->AddFloatAttribute(ui::AX_ATTR_MAX_VALUE_FOR_RANGE,
-                           src.maxValueForRange());
-    dst->AddFloatAttribute(ui::AX_ATTR_MIN_VALUE_FOR_RANGE,
-                           src.minValueForRange());
-  }
-
-  if (dst->role == ui::AX_ROLE_DOCUMENT ||
-      dst->role == ui::AX_ROLE_WEB_AREA) {
-    dst->AddStringAttribute(ui::AX_ATTR_HTML_TAG, "#document");
-    const WebDocument& document = src.document();
-    if (name.empty())
-      name = UTF16ToUTF8(document.title());
-    dst->AddStringAttribute(ui::AX_ATTR_DOC_TITLE,
-                            UTF16ToUTF8(document.title()));
-    dst->AddStringAttribute(ui::AX_ATTR_DOC_URL, document.url().spec());
-    dst->AddStringAttribute(
-        ui::AX_ATTR_DOC_MIMETYPE,
-        document.isXHTMLDocument() ? "text/xhtml" : "text/html");
-    dst->AddBoolAttribute(ui::AX_ATTR_DOC_LOADED, src.isLoaded());
-    dst->AddFloatAttribute(ui::AX_ATTR_DOC_LOADING_PROGRESS,
-                           src.estimatedLoadingProgress());
-
-    const WebDocumentType& doctype = document.doctype();
-    if (!doctype.isNull()) {
-      dst->AddStringAttribute(ui::AX_ATTR_DOC_DOCTYPE,
-                              UTF16ToUTF8(doctype.name()));
-    }
-
-    const gfx::Size& scroll_offset = document.frame()->scrollOffset();
-    dst->AddIntAttribute(ui::AX_ATTR_SCROLL_X, scroll_offset.width());
-    dst->AddIntAttribute(ui::AX_ATTR_SCROLL_Y, scroll_offset.height());
-
-    const gfx::Size& min_offset = document.frame()->minimumScrollOffset();
-    dst->AddIntAttribute(ui::AX_ATTR_SCROLL_X_MIN, min_offset.width());
-    dst->AddIntAttribute(ui::AX_ATTR_SCROLL_Y_MIN, min_offset.height());
-
-    const gfx::Size& max_offset = document.frame()->maximumScrollOffset();
-    dst->AddIntAttribute(ui::AX_ATTR_SCROLL_X_MAX, max_offset.width());
-    dst->AddIntAttribute(ui::AX_ATTR_SCROLL_Y_MAX, max_offset.height());
-  }
-
-  if (dst->role == ui::AX_ROLE_TABLE) {
-    int column_count = src.columnCount();
-    int row_count = src.rowCount();
-    if (column_count > 0 && row_count > 0) {
-      std::set<int32> unique_cell_id_set;
-      std::vector<int32> cell_ids;
-      std::vector<int32> unique_cell_ids;
-      dst->AddIntAttribute(ui::AX_ATTR_TABLE_COLUMN_COUNT, column_count);
-      dst->AddIntAttribute(ui::AX_ATTR_TABLE_ROW_COUNT, row_count);
-      WebAXObject header = src.headerContainerObject();
-      if (!header.isDetached())
-        dst->AddIntAttribute(ui::AX_ATTR_TABLE_HEADER_ID, header.axID());
-      for (int i = 0; i < column_count * row_count; ++i) {
-        WebAXObject cell = src.cellForColumnAndRow(
-            i % column_count, i / column_count);
-        int cell_id = -1;
-        if (!cell.isDetached()) {
-          cell_id = cell.axID();
-          if (unique_cell_id_set.find(cell_id) == unique_cell_id_set.end()) {
-            unique_cell_id_set.insert(cell_id);
-            unique_cell_ids.push_back(cell_id);
-          }
-        }
-        cell_ids.push_back(cell_id);
-      }
-      dst->AddIntListAttribute(ui::AX_ATTR_CELL_IDS, cell_ids);
-      dst->AddIntListAttribute(ui::AX_ATTR_UNIQUE_CELL_IDS, unique_cell_ids);
-    }
-  }
-
-  if (dst->role == ui::AX_ROLE_ROW) {
-    dst->AddIntAttribute(ui::AX_ATTR_TABLE_ROW_INDEX, src.rowIndex());
-    WebAXObject header = src.rowHeader();
-    if (!header.isDetached())
-      dst->AddIntAttribute(ui::AX_ATTR_TABLE_ROW_HEADER_ID, header.axID());
-  }
-
-  if (dst->role == ui::AX_ROLE_COLUMN) {
-    dst->AddIntAttribute(ui::AX_ATTR_TABLE_COLUMN_INDEX, src.columnIndex());
-    WebAXObject header = src.columnHeader();
-    if (!header.isDetached())
-      dst->AddIntAttribute(ui::AX_ATTR_TABLE_COLUMN_HEADER_ID, header.axID());
-  }
-
-  if (dst->role == ui::AX_ROLE_CELL ||
-      dst->role == ui::AX_ROLE_ROW_HEADER ||
-      dst->role == ui::AX_ROLE_COLUMN_HEADER) {
-    dst->AddIntAttribute(ui::AX_ATTR_TABLE_CELL_COLUMN_INDEX,
-                         src.cellColumnIndex());
-    dst->AddIntAttribute(ui::AX_ATTR_TABLE_CELL_COLUMN_SPAN,
-                         src.cellColumnSpan());
-    dst->AddIntAttribute(ui::AX_ATTR_TABLE_CELL_ROW_INDEX, src.cellRowIndex());
-    dst->AddIntAttribute(ui::AX_ATTR_TABLE_CELL_ROW_SPAN, src.cellRowSpan());
-  }
-
-  dst->AddStringAttribute(ui::AX_ATTR_NAME, name);
-
-  // Add the ids of *indirect* children - those who are children of this node,
-  // but whose parent is *not* this node. One example is a table
-  // cell, which is a child of both a row and a column. Because the cell's
-  // parent is the row, the row adds it as a child, and the column adds it
-  // as an indirect child.
-  int child_count = src.childCount();
-  for (int i = 0; i < child_count; ++i) {
-    WebAXObject child = src.childAt(i);
-    std::vector<int32> indirect_child_ids;
-    if (!is_iframe && !child.isDetached() && !IsParentUnignoredOf(src, child))
-      indirect_child_ids.push_back(child.axID());
-    if (indirect_child_ids.size() > 0) {
-      dst->AddIntListAttribute(
-          ui::AX_ATTR_INDIRECT_CHILD_IDS, indirect_child_ids);
-    }
-  }
-
-  WebVector<WebAXObject> controls;
-  if (src.ariaControls(controls))
-    AddIntListAttributeFromWebObjects(ui::AX_ATTR_CONTROLS_IDS, controls, dst);
-
-  WebVector<WebAXObject> describedby;
-  if (src.ariaDescribedby(describedby)) {
-    AddIntListAttributeFromWebObjects(
-        ui::AX_ATTR_DESCRIBEDBY_IDS, describedby, dst);
-  }
-
-  WebVector<WebAXObject> flowTo;
-  if (src.ariaFlowTo(flowTo))
-    AddIntListAttributeFromWebObjects(ui::AX_ATTR_FLOWTO_IDS, flowTo, dst);
-
-  WebVector<WebAXObject> labelledby;
-  if (src.ariaLabelledby(labelledby)) {
-    AddIntListAttributeFromWebObjects(
-        ui::AX_ATTR_LABELLEDBY_IDS, labelledby, dst);
-  }
-
-  WebVector<WebAXObject> owns;
-  if (src.ariaOwns(owns))
-    AddIntListAttributeFromWebObjects(ui::AX_ATTR_OWNS_IDS, owns, dst);
-}
-
-blink::WebDocument BlinkAXTreeSource::GetMainDocument() const {
-  WebView* view = render_view_->GetWebView();
-  WebFrame* main_frame = view ? view->mainFrame() : NULL;
-
-  if (main_frame)
-    return main_frame->document();
-
-  return WebDocument();
-}
-
-}  // namespace content