Reports the position of the caret and current selection in content editables.

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 9d4fe101afc599be1f15caf17a87cdfc0a74103b..16eddb85f91bf233258990724818dc7d740441ed 100644
--- a/content/browser/accessibility/browser_accessibility.cc
+++ b/content/browser/accessibility/browser_accessibility.cc
@@ -68,7 +68,7 @@ bool BrowserAccessibility::IsNative() const {
 }
 
 bool BrowserAccessibility::IsDescendantOf(
-    BrowserAccessibility* ancestor) {
+    const BrowserAccessibility* ancestor) const {
   if (this == ancestor) {
     return true;
   } else if (GetParent()) {
@@ -615,8 +615,8 @@ bool BrowserAccessibility::IsEditableText() const {
   }
 
   // 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.
+  // or contenteditable. We also check for the text field role to cover
+  // elements that have role=textbox set on it.
   return (!HasState(ui::AX_STATE_READ_ONLY) ||
           GetRole() == ui::AX_ROLE_TEXT_FIELD);
 }