Revert of Send Windows accessibility events based on tree updates.

content/browser/accessibility/browser_accessibility.cc

Index: content/browser/accessibility/browser_accessibility.cc
diff --git a/content/browser/accessibility/browser_accessibility.cc b/content/browser/accessibility/browser_accessibility.cc
index 65d805bd3e2c2bf4d02b6eb75d0cdd417a985f3c..8cc30d138d8b6f2f423739449fbe833ea3b1a510 100644
--- a/content/browser/accessibility/browser_accessibility.cc
+++ b/content/browser/accessibility/browser_accessibility.cc
@@ -36,6 +36,11 @@
     ui::AXNode* node) {
   manager_ = manager;
   node_ = node;
+}
+
+void BrowserAccessibility::OnDataChanged() {
+  GetStringAttribute(ui::AX_ATTR_NAME, &name_);
+  GetStringAttribute(ui::AX_ATTR_VALUE, &value_);
 }
 
 bool BrowserAccessibility::PlatformIsLeaf() const {
@@ -89,17 +94,6 @@
   }
 
   return result;
-}
-
-bool BrowserAccessibility::PlatformIsChildOfLeaf() const {
-  BrowserAccessibility* ancestor = GetParent();
-  while (ancestor) {
-    if (ancestor->PlatformIsLeaf())
-      return true;
-    ancestor = ancestor->GetParent();
-  }
-
-  return false;
 }
 
 BrowserAccessibility* BrowserAccessibility::GetPreviousSibling() {
@@ -390,6 +384,9 @@
 
 void BrowserAccessibility::Destroy() {
   // Allow the object to fire a TextRemoved notification.
+  name_.clear();
+  value_.clear();
+
   manager_->NotifyAccessibilityEvent(ui::AX_EVENT_HIDE, this);
   node_ = NULL;
   manager_ = NULL;
@@ -560,6 +557,24 @@
   return true;
 }
 
+void BrowserAccessibility::SetStringAttribute(
+    ui::AXStringAttribute attribute, const std::string& value) {
+  if (!node_)
+    return;
+  ui::AXNodeData data = GetData();
+  for (size_t i = 0; i < data.string_attributes.size(); ++i) {
+    if (data.string_attributes[i].first == attribute) {
+      data.string_attributes[i].second = value;
+      node_->SetData(data);
+      return;
+    }
+  }
+  if (!value.empty()) {
+    data.string_attributes.push_back(std::make_pair(attribute, value));
+    node_->SetData(data);
+  }
+}
+
 bool BrowserAccessibility::HasIntListAttribute(
     ui::AXIntListAttribute attribute) const {
   const ui::AXNodeData& data = GetData();
@@ -687,6 +702,17 @@
   return grandparent->GetRole() == ui::AX_ROLE_IFRAME_PRESENTATIONAL;
 }
 
+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 (GetRole() == ui::AX_ROLE_STATIC_TEXT)
     return static_cast<int>(GetStringAttribute(ui::AX_ATTR_VALUE).size());