Reland: Made content editables report the caret and text selection by treating them as text controls

Source/modules/accessibility/AXNodeObject.cpp

Index: Source/modules/accessibility/AXNodeObject.cpp
diff --git a/Source/modules/accessibility/AXNodeObject.cpp b/Source/modules/accessibility/AXNodeObject.cpp
index a5438ac4ada964ee02f7734e009ef76f7e326b59..247386d0d7ac508efbec4fd4a61534a67d7d32a2 100644
--- a/Source/modules/accessibility/AXNodeObject.cpp
+++ b/Source/modules/accessibility/AXNodeObject.cpp
@@ -511,8 +511,9 @@ void AXNodeObject::elementsFromAttribute(WillBeHeapVector<RawPtrWillBeMember<Ele
     }
 }
 
-// If you call node->hasEditableStyle() since that will return true if an ancestor is editable.
-// This only returns true if this is the element that actually has the contentEditable attribute set.
+// This only returns true if this is the element that actually has the
+// contentEditable attribute set, unlike node->hasEditableStyle() which will
+// also return true if an ancestor is editable.
 bool AXNodeObject::hasContentEditableAttributeSet() const
 {
     if (!hasAttribute(contenteditableAttr))
@@ -522,6 +523,21 @@ bool AXNodeObject::hasContentEditableAttributeSet() const
     return contentEditableValue.isEmpty() || equalIgnoringCase(contentEditableValue, "true");
 }
 
+bool AXNodeObject::isTextControl() const
+{
+    if (hasContentEditableAttributeSet())
+        return true;
+
+    switch (roleValue()) {
+    case TextFieldRole:
+    case ComboBoxRole:
+    case SearchBoxRole:
+        return true;
+    default:
+        return false;
+    }
+}
+
 bool AXNodeObject::isGenericFocusableElement() const
 {
     if (!canSetFocusAttribute())