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

Source/modules/accessibility/AXObject.cpp

Index: Source/modules/accessibility/AXObject.cpp
diff --git a/Source/modules/accessibility/AXObject.cpp b/Source/modules/accessibility/AXObject.cpp
index d451350c269b3c73125e32f061c7b31bacc2fce0..9a6158096672cd72bed7b0b44dcdeb10790cdfc1 100644
--- a/Source/modules/accessibility/AXObject.cpp
+++ b/Source/modules/accessibility/AXObject.cpp
@@ -317,8 +317,22 @@ bool AXObject::isPasswordFieldAndShouldHideValue() const
     return isPasswordField();
 }
 
+// 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.
+bool AXObject::hasContentEditableAttributeSet() const
+{
+    if (!hasAttribute(contenteditableAttr))
+        return false;
+    const AtomicString& contentEditableValue = getAttribute(contenteditableAttr);
+    // Both "true" (case-insensitive) and the empty string count as true.
+    return contentEditableValue.isEmpty() || equalIgnoringCase(contentEditableValue, "true");
+}
+
 bool AXObject::isTextControl() const
 {
+    if (hasContentEditableAttributeSet())
+        return true;
+
     switch (roleValue()) {
     case TextAreaRole:
     case TextFieldRole: