Expose multiline attribute from blink

Source/modules/accessibility/InspectorAccessibilityAgent.cpp

Index: Source/modules/accessibility/InspectorAccessibilityAgent.cpp
diff --git a/Source/modules/accessibility/InspectorAccessibilityAgent.cpp b/Source/modules/accessibility/InspectorAccessibilityAgent.cpp
index c046870fa5b017c6ec920e3c865b87aace23f9bd..82584d2434012dea0d2cf75da9684ef5eba5d1b7 100644
--- a/Source/modules/accessibility/InspectorAccessibilityAgent.cpp
+++ b/Source/modules/accessibility/InspectorAccessibilityAgent.cpp
@@ -213,12 +213,12 @@ bool roleAllowsOrientation(AccessibilityRole role)
 
 bool roleAllowsReadonly(AccessibilityRole role)
 {
-    return role == GridRole || role == CellRole || role == TextAreaRole || role == TextFieldRole || role == ColumnHeaderRole || role == RowHeaderRole || role == TreeGridRole;
+    return role == GridRole || role == CellRole || role == TextFieldRole || role == ColumnHeaderRole || role == RowHeaderRole || role == TreeGridRole;
 }
 
 bool roleAllowsRequired(AccessibilityRole role)
 {
-    return role == ComboBoxRole || role == CellRole || role == ListBoxRole || role == RadioGroupRole || role == SpinButtonRole || role == TextAreaRole || role == TextFieldRole || role == TreeRole || role == ColumnHeaderRole || role == RowHeaderRole || role == TreeGridRole;
+    return role == ComboBoxRole || role == CellRole || role == ListBoxRole || role == RadioGroupRole || role == SpinButtonRole || role == TextFieldRole || role == TreeRole || role == ColumnHeaderRole || role == RowHeaderRole || role == TreeGridRole;
 }
 
 bool roleAllowsSort(AccessibilityRole role)
@@ -280,9 +280,7 @@ void fillWidgetProperties(AXObject* axObject, PassRefPtr<TypeBuilder::Array<AXPr
     }
 
     if (role == TextFieldRole)
-        properties->addItem(createProperty(AXWidgetAttributes::Multiline, createBooleanValue(false)));
-    else if (role == TextAreaRole)
-        properties->addItem(createProperty(AXWidgetAttributes::Multiline, createBooleanValue(true)));
+        properties->addItem(createProperty(AXWidgetAttributes::Multiline, createBooleanValue(axObject->isMultiline())));
 
     if (roleAllowsReadonly(role)) {
         properties->addItem(createProperty(AXWidgetAttributes::Readonly, createBooleanValue(axObject->isReadOnly())));